The 8 month sleep regression: crawling, clinginess and calmer nights

Just when nights had become a bit more predictable, your 8 or 9 month old starts waking again. They might cry the moment you leave the room, pull themselves up to standing in the cot at 2am and then look outraged about it, or fight naps they used to take happily.

This stretch, often called the 8 (or 9, or 10) month sleep regression, is usually a sign of a lot going right.

What’s going on at 8–10 months

New physical skills

Many babies learn to crawl, pull up to standing and cruise around furniture at this age. New skills are exciting, and babies often practise them wherever they are, including the cot. Some pull up to standing and then genuinely don’t know how to get back down.

Separation anxiety

Somewhere around the second half of the first year, many babies become more aware that you’re a separate person who can leave. They may cry when you go out of sight, and wake at night looking for you. That’s a healthy sign of attachment. It isn’t something you’ve caused by cuddling them too much.

Nap changes

Many babies move from three naps to two somewhere between about 6 and 9 months (HSE). The in-between weeks can be messy: three naps feel like too many, two leave them overtired, and nights wobble as a result.

Food and feeding

Solids are building up, milk feeds may be shifting, and distracted daytime feeds are common. Some babies make up for it at night.

Signs you might be in it

• More frequent night waking after a settled spell
• Crying when you leave the room at bedtime, or wanting you back once you’ve gone
• Standing, sitting up or crawling in the cot instead of sleeping
• Shorter or refused naps, especially the third one
• Earlier waking in the morning

What tends to help

Lots of daytime practice

Give plenty of floor time to crawl, pull up and cruise. If your baby gets stuck standing, practise bending their knees and lowering down while holding furniture. It’s a game during the day and a lifeline at night.

Little goodbyes during the day

Peekaboo, stepping out of the room for a moment and coming back with a smile, saying “back in a minute” and keeping your word: these small, repeated experiences help babies learn that you always come back.

A steady routine and a sensible bedtime

The HSE suggests bedtime between 7pm and 9pm for this age, with no naps after 3.30pm from about 9 months, and sleep and wake times at about the same time each day (HSE). A familiar bedtime routine is especially comforting when separation feels big.

Check naps and awake time

At this age many babies manage around 2½ to 3½ hours awake between sleeps. If your baby is fighting the third nap, it may be time to move to two. If they’re melting down before bed, they may need a slightly earlier bedtime while they adjust. Our wake windows guide and 6 month schedule have sample days.

Calm, consistent night responses

When your baby wakes, the HSE suggests waiting a minute before going in, since they may resettle. If not, comfort them quietly, put them back in their cot and leave once they’re settled. Keep the response similar each time so it becomes predictable (HSE). If they’re standing, gently lay them down without fuss, as many times as it takes.

Comfort is OK

A baby in the middle of separation anxiety may simply need more of you for a while. Extra reassurance now doesn’t create a forever habit. If you want to gradually reduce how much help your baby needs later, there are gentle ways to do it.

If you’re thinking about sleep training

Some families decide to work on settling around this age. Options range from very gradual approaches, like the HSE’s “gradual retreat” where you sit beside the cot and move further away every three to four nights, to more structured methods. Our sleep training methods comparison lays them out side by side.

The research is reassuring for families who choose this route. A randomised trial found that graduated extinction and bedtime fading improved infant sleep without detectable effects on attachment a year later (Gradisar et al., 2016). A five-year follow-up of a behavioural sleep programme found no evidence of harm to children’s emotional health or the parent–child relationship (Price et al., 2012).

It’s equally fine not to. Choose what fits your family, and wait until your baby is well and not in the middle of teething or illness.

When to talk to someone

Most babies come out the other side of this stage with a new skill and a stronger bond with you. Hang in there.