The 8-Month Sleep Regression: Why Sleep Falls Apart Now
The 8-month sleep regression lands as your baby learns to crawl, pull up and protest separation. Sleep that had settled suddenly falls apart: more night waking, nap refusal and clinginess. It usually lasts two to six weeks. Keep 2.5 to 3 hour wake windows, two naps and a dark room, and wait it out.
Not medical advice: this page is general information for parents, not a diagnosis or treatment plan. If your baby is sick, feeding poorly, breathing oddly or you simply feel something is wrong, call your pediatrician. For emergencies, call your local emergency number.
Signs it is happening now
- Standing or cruising in the crib at 3:00 AM and not knowing how to lie back down
- Nap refusal at both naps, or naps cut to 30 minutes
- Crying when you leave the room after weeks of being fine
- Waking twice a night again after sleeping through
- Practicing new skills — crawling, pulling to stand, babbling — instead of sleeping
How long does it last?
Expect two to six weeks, usually the length of the mobility burst. If your baby cannot settle from standing, help him lie down a few times a night for a week; most learn it in 3–7 days.
What to do tonight
- Practice standing-to-lowering in the daytime so the crib skill is learned when he is not tired.
- Lower your baby when he stands in the crib, calmly and without picking him up, and leave the room.
- Keep a 7:00–8:00 PM bedtime — 8-month-olds still need roughly 14 hours of sleep a day.
- Babyproof the whole room: a camera check plus a safe space means you can respond fast at night.
- Give extra short play-and-snuggle windows in the evening so separation anxiety is met before bed.
Quick schedule reference for 8 months
| Wake windows | 2.5–3 hours |
|---|---|
| Naps | 2 × 1–1.5 hours (about 9:30 AM and 1:30 PM) |
| Night sleep | 10–11 hours, sometimes one wake |
| Bedtime | 7:00–8:00 PM |
Typical ranges for healthy children, not targets. Tune your own times with the wake window calculator or the month-by-month schedules (13–36 months).
What the guidelines say
The American Academy of Pediatrics (AAP) recommends a consistent bedtime routine and a separate, flat sleep surface for infants. The CDC puts total sleep at 12–16 hours a day for babies 4–12 months, 11–14 hours for ages 1–2 and 10–13 hours for ages 3–5, and the National Sleep Foundation (NSF) ranges match those numbers. Use them as ranges, not targets: total sleep differs from child to child.
Frequently asked questions
- Is there really an 8-month sleep regression?
- The timing is real even if the label is loose: mobility and separation anxiety peak around 8–10 months, and that combination reliably disrupts sleep that had improved.
- Does crawling cause the waking?
- Crawling does not wake babies so much as it stops them settling: the brain wants to practice, and standing in the crib is a new trick with no way back down.
- Should I go in every time he stands up?
- Go in, keep it boring, lower him down and leave. Reacting with play rewards the standing; ignoring a genuinely stuck baby teaches nothing. Calm, brief, consistent is the middle path.
- Do I need to night-wean during the regression?
- Babies at 8 months may still need one feed. If your pediatrician is happy with weight gain, you can gently reduce feeds outside the regression — the worst weeks are not the time to start.