Guides · Sleep schedule
3 Month Old Sleep Schedule
At three months your baby is past the newborn fog: day and night are starting to separate, and naps consolidate into three or four predictable windows. Wake windows run 75–105 minutes, total sleep is 14–17 hours, and the 4-month sleep regression is usually the next landmark on the horizon.
Sleep schedule · data from paediatric sleep guidelinesWake windows, naps and total sleep
At this age your baby can comfortably stay awake for 1h 15m–1h 40m between sleeps. Most 3 month babies take 3–4 naps a day and sleep 14–17 hours (day naps + night sleep). Use the wake window — not the clock — as your main signal for when the next sleep is due.
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Illustrative rhythm — every baby varies. Use wake windows rather than the clock to time sleep.
| Time | What happens |
|---|---|
| 7:00 AM | Wake, feed |
| 9:00–10:30 AM | Nap 1 |
| 12:30–2:00 PM | Nap 2 |
| 4:00–5:00 PM | Nap 3 (catnap) |
| 7:00 PM | Bedtime routine, sleep |
| Night | ~11–12h (with feeds) |
Bedtime routine
A predictable bedtime routine cues your baby that sleep is coming and makes settling easier. At this age, aim for a calm 20–30 minute wind-down in the same order every night. A simple sequence:
- Bath or wash — warm water lowers body temperature, a natural sleep signal.
- Feed — milk in a dim, quiet room; burp well before lying down.
- Book or song — two short books or one familiar lullaby.
- Swaddle or sleeping bag — a clear "sleep time" cue.
- Into the crib calm — use a settling approach that is safe and workable for your family.
Lay your baby down using the settling approach that works for your family. Respond as needed, and see our fuller bedtime routine guide for age-by-age variations.
Common sleep challenges at this age
- Short naps. Thirty-to-forty-five-minute naps are developmentally normal at this age. Keep offering the next nap rather than pushing longer wake windows to force longer naps.
- Sleep cues. At 3 months, drowsy signs are subtle and late. Watch the clock as much as the cues — most 3-month-olds need sleep within 90–105 minutes of waking.
- The 4-month regression. Sleep architecture changes permanently around 4 months. If sleep falls apart at the end of this month, it is a normal transition, not a setback you caused.
Frequently asked questions
What is the wake window for a 3-month-old?
About 75–105 minutes. Most 3-month-olds need a nap within 1.5–2 hours of waking, and bedtime works best roughly 90 minutes after the last nap ends.
How many naps at 3 months?
Three to four: two solid naps plus one or two short catnaps. Total daytime sleep is usually 4–6 hours, with 11–12 hours overnight (including feeds).
What time should a 3-month-old go to bed?
Most settle well with a 7:00–8:00 PM bedtime. An early bedtime protects the longest sleep stretch, which typically starts a few hours after going down.
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This schedule is a general guide based on paediatric sleep consensus, not medical advice. Every baby is different. For persistent sleep problems, breathing pauses during sleep, or anything that worries you, talk to your pediatrician.