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

One of the most powerful tools for improving baby sleep is getting the timing right. Too little awake time means your baby isn't tired enough at bedtime. Too much awake time means they're overtired — and overtired babies sleep worse, not better.

Here's a complete age-by-age guide to wake windows, nap schedules, and total sleep needs.

Understanding Wake Windows

A wake window is the amount of time a baby can comfortably stay awake before needing to sleep again. Miss the window and your baby gets overtired — their cortisol rises, making it harder to fall and stay asleep.

Signs your baby is approaching the end of their wake window:

Yawning
Rubbing eyes or ears
Staring blankly
Becoming fussier or harder to engage
Slowing down or losing interest in play

Act on early cues — not late ones.

0–4 Weeks: No Schedule Yet

At this age, scheduling is not appropriate or possible. Your newborn needs to:

Feed on demand (8–12 times in 24 hours)
Sleep when they need to (which is most of the time)
Have their basic needs met consistently

Total sleep: 14–17 hours

Wake windows: 45–60 minutes (often less — they may only be awake long enough to feed and be changed)

Number of naps: Continuous — no distinct naps yet

What to focus on: Distinguishing day from night (lights and noise during the day; dark and quiet at night), responding to hunger cues, and recovering from birth.

1–2 Months: Watching for Patterns

Babies begin to have slightly longer periods of alertness. You may notice they're more awake in certain parts of the day.

Total sleep: 14–16 hours

Wake windows: 60–90 minutes

Number of naps: 4–6 per day (still unpredictable)

Bedtime: 9pm–11pm (still late; biological bedtime moves earlier from about 3–4 months)

What to focus on: Watching wake windows to catch the sleepy window; beginning a simple pre-sleep routine for naps and night sleep (feed, hold, settle).

2–3 Months: Emerging Patterns

Some predictability begins to emerge. Your baby may start having more consistent alert periods and one longer sleep stretch per night.

Total sleep: 13–15 hours

Wake windows: 75–90 minutes

Number of naps: 3–5 per day

Bedtime: 8pm–10pm (gradually moving earlier)

What to focus on: Beginning a consistent bedtime routine; noting which times of day your baby is naturally more or less sleepy.

3–4 Months: The Big Shift

Around 3–4 months, sleep architecture matures permanently. Your baby now cycles through light and deep sleep like an adult — which means they wake between cycles and need to know how to resettle.

Total sleep: 13–14 hours

Wake windows: 90 minutes–2 hours

Number of naps: 3–4 per day

Bedtime: 7:30pm–8:30pm

Sample schedule:

7:00am: Wake
9:00am: Nap 1 (45–75 min)
11:30am: Nap 2 (45–90 min)
2:30pm: Nap 3 (30–45 min)
7:30pm: Bedtime

What to focus on: If sleep has deteriorated, this is the 4-month sleep regression. Consider beginning to put baby down awake and drowsy if night waking is very frequent.

4–6 Months: Consolidating to 3 Naps

Wake windows extend and naps may consolidate slightly.

Total sleep: 12–15 hours (10–12 night + 2–4 day)

Wake windows: 1.5–2.5 hours

Number of naps: 3 per day

Bedtime: 7:00pm–8:00pm

Sample 3-nap schedule:

7:00am: Wake
9:00am: Nap 1 (45–90 min)
12:30pm: Nap 2 (45–90 min)
3:30pm: Nap 3 (30–45 min — cap here)
7:00pm: Bedtime

What to focus on: If you want to sleep train, 4–6 months is an ideal window for most methods. See the complete sleep training guide.

6–8 Months: Transitioning to 2 Naps

The third nap becomes less sustainable as wake windows extend.

Total sleep: 12–14 hours (11–12 night + 2–3 day)

Wake windows: 2–3 hours

Number of naps: 2 per day

Bedtime: 6:45pm–7:30pm

Signs ready to drop the third nap:

Consistently resisting the third nap
Bedtime becoming very late (after 9pm)
Waking very early in the morning

Sample 2-nap schedule:

7:00am: Wake
9:30am: Nap 1 (1–1.5 hours)
1:30pm: Nap 2 (1–1.5 hours)
7:00pm: Bedtime

8–12 Months: 2 Naps, Then 1

Most babies stay on 2 naps through most of the first year, transitioning to 1 nap sometime between 12–18 months.

Total sleep: 12–14 hours

Wake windows: 2.5–4 hours

Number of naps: 2

Bedtime: 7:00pm–7:30pm

Around 10–12 months:

Morning nap may shorten; some babies start showing signs of readiness for 1 nap (refusing morning nap, not tired enough at lunchtime). Most sleep experts recommend waiting until 13–15 months for the nap transition when possible.

General Scheduling Principles

Protect Bedtime

The last nap of the day should end at least 2–2.5 hours before bedtime (at 4 months) to 3–4 hours before bedtime (at 12 months). A nap ending at 5pm when bedtime is 7pm works; a nap ending at 6pm does not.

Cap the Last Nap

Cap the last nap of the day (usually 30–45 minutes) to protect bedtime. Set a timer — wake your baby even if they're still sleeping.

The 80% Rule

You don't need a perfect schedule — you need a consistent one. If you hit wake windows and nap times about 80% of the time, sleep will improve. Flexibility for life is fine; chronic inconsistency is not.

Early Bedtime = Later Wake

Counterintuitively, moving bedtime earlier often results in a later morning wake time. Overtired babies wake early and can't return to sleep. A well-rested baby entering natural morning light wake time will naturally sleep longer.

For tracking sleep and understanding your baby's natural patterns, use our Due Date Calculator to confirm your baby's exact age, and consult the Symptom Checker if sleep concerns you.

📋 SOURCES & FACT-CHECKING
This article is compiled and verified against these authoritative sources: - CDC (Centers for Disease Control & Prevention) - WHO (World Health Organization) - ACOG (American College of Obstetricians and Gynecologists) - NHS (National Health Service) - AAP (American Academy of Pediatrics)
Last verified: June 2026
Educational content only. Always consult your pediatrician for medical decisions.