Baby Sleep Schedule by Age (0–12 Months): The Complete Guide

It's 3am. You're squinting at your phone, one eye closed, baby finally — finally — asleep on your chest. You type: "how much should my baby sleep?" And then you get twelve different answers from twelve different sources, none of which agree, and all of which assume you have the mental bandwidth to cross-reference a spreadsheet right now.

You don't. You're running on 90-minute stretches and cold coffee.

Here's what you actually need: a clear, age-by-age framework that tells you how much sleep to expect, how long those awake windows should be, and what to focus on at each stage. Not a lecture. Not a one-size-fits-all schedule. A real guide you can use tonight — and then again at every month that follows.

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How Baby Sleep Evolves in the First Year

Before we get to the charts, one minute of context — because it explains everything.

Newborns have no circadian rhythm. That internal clock that tells you it's nighttime? Babies don't develop it until around 3–4 months. Until then, their sleep is distributed fairly evenly across the 24-hour day, which is why a strict schedule doesn't work (or need to work) early on.

Baby sleep cycles are short. Adults cycle through sleep stages every 90 minutes or so. Babies cycle every 45–50 minutes. Every time they hit a light sleep phase, they can — and often do — fully rouse. It's not a problem. It's just how their brains work right now.

Sleep consolidates gradually. There's no single magic milestone where your baby suddenly "sleeps through the night." It's a slow, non-linear process of longer stretches happening more reliably over time.

Total sleep needs drop as they grow: from 16–18 hours as a newborn to 12–14 hours by 12 months. The distribution shifts from scattered naps all day to predictable nap blocks + a long overnight stretch.

That's the biology. Now for the practical.

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Baby Sleep Schedule by Age: Month-by-Month Breakdown

Newborn (0–4 Weeks)

• Total sleep: 15–18 hours/day
• Awake windows: 45–60 minutes
• Naps: 4–6 (no real schedule — feed, sleep, repeat)
• Night sleep: Fragmented; feeds every 2–3 hours

Your one job right now is to feed your baby well and keep them from getting overtired. Watch for sleepy cues — yawning, glazed eyes, slowing movements — and respond to them quickly. Awake windows this short mean you're putting baby down again almost immediately after they wake.

Don't try to build a schedule yet. There's nothing to schedule. This stage is survival mode, and that's completely okay.

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1–2 Months

• Total sleep: 14–17 hours/day
• Awake windows: 60–90 minutes
• Naps: 4–5
• Night sleep: Some babies begin one slightly longer stretch (3–4 hours)

You might notice a loose rhythm starting to emerge — not a schedule, but a pattern. This is the time to begin gently introducing an eat-activity-sleep sequence: feed, then a little awake time, then sleep. It helps break the nursing-to-sleep association before it becomes entrenched.

Don't expect consistency yet. Some days will feel like you've turned a corner; others will feel like you've gone backward. Both are normal.

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3–4 Months

• Total sleep: 14–16 hours/day
• Awake windows: 1–1.5 hours (3 months); 1.5–2 hours (4 months)
• Naps: 4 naps; some 4-month-olds drop to 3
• Night sleep: The 4-month sleep regression often lands here

The 4-month sleep regression is real, and it's not what most parents expect. It's not a problem — it's a sign that your baby's brain is maturing. Their circadian rhythm is developing, and their sleep cycles are shifting to look more like adult sleep. The result: more waking between cycles as they learn to connect them.

This is also the point where circadian anchors start to matter. Morning light exposure, a consistent first morning wake time, and a predictable bedtime (even a loose one) help lay the groundwork for the sleep consolidation ahead.

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5–6 Months

• Total sleep: 14–15 hours/day
• Awake windows: 2–2.25 hours
• Naps: 3 naps; some babies shift to 2 around 6–7 months
• Night sleep: Many babies capable of 8–10 hour stretches

At this stage, the bedtime routine becomes important. Not elaborate — just consistent. The same sequence of 3–4 calming steps in the same order every night signals to your baby's nervous system that sleep is coming. Babies this age are incredibly receptive to predictability.

If your baby is still waking frequently at night, it's worth looking at sleep associations — specifically, whether they need to be held, nursed, or rocked all the way to sleep. What gets them into sleep is often what they'll need to get back to sleep after each cycle.

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7–9 Months

• Total sleep: 13–14 hours/day
• Awake windows: 2.5–3 hours
• Naps: 2 naps (morning + afternoon)
• Night sleep: 10–11 hours possible; the 8–9 month regression is common

The 8–9 month regression hits many families hard. Object permanence is developing — baby now knows you exist when you leave the room, which makes separation at bedtime suddenly much more loaded. Developmental leaps in mobility (crawling, pulling to stand) also disrupt sleep as the brain processes new skills.

Protect the 2-nap schedule here. A baby dropping from 2 naps to 1 before 12–14 months is almost always overtired, not ready for the transition. A cranky baby who fights naps isn't done napping — they're past the window.

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10–12 Months

• Total sleep: 12–14 hours/day
• Awake windows: 3–4 hours
• Naps: 2 naps (1-nap transition is typically 14–18 months)
• Night sleep: 11–12 hours; 0–2 night feeds depending on the baby

By 10–12 months, most babies can handle a solid overnight stretch. Bedtime between 6:30–8pm is the sweet spot for this age — it sounds counterintuitive, but pushing bedtime later in hopes of a later morning wake almost always backfires. Overtired babies wake earlier and sleep worse.

If you're still seeing frequent night waking, this is the age where sleep environment, associations, and consistency really pay off. A well-established bedtime routine makes a measurable difference.

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Sample Daily Schedule: 6-Month-Old

Here's what a reasonable day looks like at 6 months. This is a template, not a rule — shift the whole block earlier or later based on your baby's natural wake time.

Time	Activity
7:00am	Wake, feed
9:00am	Nap 1 (1–1.5 hrs)
11:00am	Wake, feed, play
1:00pm	Nap 2 (1–1.5 hrs)
3:00pm	Wake, feed, play
5:30pm	Short catnap (30–45 min) — may or may not be needed
6:30–7:00pm	Start bedtime routine
7:00–7:30pm	Asleep

If your baby wakes at 6am instead of 7, start the whole schedule an hour earlier. The intervals between sleeps — the wake windows — matter more than the clock times.

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Why Wake Windows Matter More Than Clock Time

A wake window is the amount of time your baby can comfortably be awake between sleeps. It's arguably the most important number in infant sleep.

Put baby down too early (before the window closes) and you'll fight a baby who isn't ready for sleep — short naps, difficulty settling, false starts. Put baby down too late and you're dealing with an overtired baby who's flooded with cortisol. Overtiredness actually prevents sleep and makes everything harder. (We have a deeper dive on this in our overtired toddler guide — the infant version is the same principle.)

The sweet spot is sleepy but not overtired. Watch for these cues:

• Eye rubbing — the classic sign, and it means the window is closing
• Glassy or unfocused stare — zoning out, losing interest in toys or faces
• Ear pulling or fussing — later cues; if you're seeing these, you're already past the ideal window

When you catch the window at the right time, naps are easier to start and tend to last longer.

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Common Baby Sleep Schedule Mistakes

These are so easy to make when you're exhausted. No judgment — just a heads up.

1. Keeping baby awake longer hoping they'll sleep better. This backfires almost every time. Overtiredness makes it harder to fall asleep and harder to stay asleep.

2. Dropping naps too early. A baby who fights naps isn't done napping. They're usually overtired and need help settling, not permission to skip.

3. Inconsistent bedtime. The circadian rhythm needs consistent anchors to strengthen. A wildly shifting bedtime undermines the biological clock you're trying to set.

4. Moving bedtime later to fix early waking. A late bedtime usually produces an overtired baby who wakes even earlier — not a baby who sleeps in.

5. Comparing to other babies. The developmental range is genuinely wide. A 6-month-old sleeping 12 hours straight is not the standard — it's one end of a very wide spectrum. Your baby's pattern is their own.

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When Schedules Fall Apart (And That's Normal)

Teething. A cold. A trip across time zones. A developmental leap that has your baby awake half the night practicing new skills. Any of these can unravel a schedule that was working beautifully.

That's normal. It's not a sign that the schedule was wrong, or that you did something wrong, or that your baby has a "sleep problem."

The most important thing when disruption happens is to return to the schedule as soon as possible. Consistency is the anchor. Even imperfect consistency works. Two or three days back on the routine and most babies recalibrate.

The 4-month and 8–9 month regressions are the most common culprits for sustained disruption. Both are developmental — they pass. They usually resolve within 2–4 weeks.

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Building a Consistent Bedtime Routine

A bedtime routine doesn't have to be elaborate to be effective. Five to ten minutes. The same 3–4 steps. Every night. That's it.

At 3–4 months, you can start something simple: a feeding, a short song, into the sleep space. The content matters less than the consistency. At 6 months, it matters a lot — your baby is old enough to understand that this sequence predicts sleep, and that predictability is genuinely calming to the nervous system.

Common elements: dim the lights, give a bath (not every night necessarily), offer a feeding, read a short book, sing a song, say goodnight. The exact recipe is yours to choose. We have a full bedtime routine guide for toddlers — a baby-specific version is coming soon, but the framework translates well.

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Frequently Asked Questions

When do babies sleep through the night?

Technically, "sleeping through the night" in the clinical sense means a 5–6 hour stretch — not 11 hours. Most babies achieve that first longer stretch somewhere between 2–4 months. What most parents mean — an 11–12 hour overnight — is something many babies are capable of between 4–6 months, if the sleep environment and associations are set up well. Some take longer. Both timelines are normal.

My baby only naps 30–45 minutes. Is something wrong?

Not necessarily. A 30–45 minute nap = one sleep cycle, and short naps are completely developmentally normal before 6 months. After 6 months, if short naps are bothering you, look at wake windows first — often an adjustment of 15–20 minutes makes a significant difference. Sleep environment (darkness, white noise) matters too. But in the newborn stage, short naps are not a problem that needs solving.

Should I wake my baby to feed on a schedule?

In the early weeks — yes, for most babies. Newborns need to feed frequently for weight gain, and a sleepy newborn won't always wake on their own reliably. Follow your pediatrician's guidance here. Once your baby has regained birth weight and is gaining well, most families can start letting baby lead on hunger cues. When in doubt, ask your pediatrician.

My baby slept great, then suddenly started waking again. Why?

The most common culprits are the 4-month sleep regression (circadian rhythm development, sleep cycle maturation) and the 8–9 month regression (object permanence, developmental leaps). Teething, illness, and travel can cause similar disruption at any age. The good news: most regressions resolve in 2–4 weeks with consistent responses and a return to routine.

How do I know if my baby is getting enough sleep?

Signs your baby is getting adequate sleep: wakes up in a good mood, is alert and engaged during wake windows, isn't melting down constantly, and is gaining weight appropriately (especially in early months). Signs they may need more: very difficult to wake, chronically fussy throughout the day, falls asleep immediately in the car or stroller almost every time. If you're concerned, your pediatrician is your best resource.

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The first year is the steepest learning curve you'll ever climb as a parent. Every few weeks, just when you think you've figured it out, the baby changes — new wake windows, dropped nap, new regression. The framework in this guide gives you a foundation to work from; your baby gives you the real-time feedback.

Follow the wake window cues. Protect the nap schedule. Keep bedtime consistent. And give it time — it really does get easier.

For more on navigating infant and toddler sleep challenges, visit our sleep problems hub.