Guides · Sleep schedule
9 Month Old Sleep Schedule
At nine months your baby is on a stable two-nap schedule, with wake windows of 2.75–3.5 hours and 11–12 hours at night. This is one of the most predictable sleep ages — until development intervenes. Separation anxiety peaks, many babies pull to standing in the crib, and the 8–9 month sleep regression can disrupt a previously great sleeper. Total sleep over 24 hours is typically 12–15 hours.
Sleep schedule · data from paediatric sleep guidelinesWake windows, naps and total sleep
At this age your baby can comfortably stay awake for 2h 45m–3h 30m between sleeps (the "9–10 months" band). Most 9 month babies take 2 naps a day and sleep 12–15 hours (day naps + night sleep). Use the wake window — not the clock — as your main signal for when the next sleep is due.
Wake Window Calculator
Get the exact wake window for your baby's age in seconds — free, no sign-up.
Open the free calculator →Example daily schedule
Illustrative rhythm — every baby varies. Use wake windows rather than the clock to time sleep.
| Time | What happens |
|---|---|
| 7:00 AM | Wake, breakfast + feed |
| 9:30–11:00 AM | Nap 1 |
| 11:00 AM | Wake, feed/snack |
| 2:00–3:30 PM | Nap 2 |
| 3:30 PM | Wake, snack + feed |
| 7:00 PM | Bedtime routine, feed, sleep |
| Night | ~11h; most sleep through |
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 drowsy but awake — the single most important sleep-shaping habit at every age.
Lay your baby down calm but not fully asleep so they learn to connect sleep cycles themselves. If they fuss, pause briefly before soothing — many settle within a minute. See our fuller bedtime routine guide for age-by-age variations.
Common sleep challenges at this age
- Separation anxiety. Object permanence has arrived — your baby knows you exist when you leave, and protests. A predictable, warm bedtime routine and a consistent phrase ("I'll be back in a minute") help. Avoid sneaking out; brief, confident goodbyes build trust faster.
- Standing in the crib. Newly mobile babies often stand and get stuck. Practice standing and sitting during the day, and at sleep times give them a moment to lie down themselves before helping. This phase usually passes in a few weeks.
- 8–9 month sleep regression. Linked to the burst in motor and cognitive development, your baby may wake more for 2–6 weeks. Stick to the routine, offer reassurance, and resist reintroducing sleep associations you've already dropped.
Frequently asked questions
What is the wake window for a 9-month-old?
About 2.75 to 3.5 hours (165–210 minutes). The middle of the day usually handles the longest wake window. Two naps of 1–1.5 hours each typically sum to 2–3 hours of day sleep.
When do babies drop to one nap?
The 2-to-1 nap transition usually happens between 12 and 18 months. At 9 months, two naps are still right for almost all babies — dropping too early causes overtiredness and night wakings.
Why is my 9-month-old suddenly waking at night again?
Most often it is separation anxiety plus a burst in motor development (crawling, pulling to stand). Hunger from a solids dip, teething, or a nap regression are also possible. Hold the routine steady and address the cause rather than introducing new sleep associations.
Related guides
How Bebblo compares:
Turn this schedule into a daily plan
Bebblo logs sleep with one tap, estimates the next wake window from these exact ranges, and keeps history on-device. Free, offline, 14 languages.
Download Bebblo Free · Free 14-day trial. No credit card required.
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.