Just when your baby finally settled into a predictable rhythm, the 6 month sleep regression arrives to shake things up. Around the half-year mark, many babies who were sleeping in long, lovely stretches suddenly start waking every few hours, fighting naps and treating bedtime like a negotiation. If this sounds like your house right now, take a breath: it's a normal, temporary phase — and there's a lot you can do to get through it with your sanity (mostly) intact.
What causes the 6 month sleep regression?
Sleep regressions almost always line up with big developmental leaps, and six months is packed with them. Your baby may be learning to sit, roll both ways, babble and grab everything within reach. Their brain is working overtime, and practising new skills is far more exciting than sleeping — some babies will literally wake up to roll or "talk" in the cot.
There are physical changes at play too. Many babies cut their first teeth around this age, start solids, and drop from four naps to three (or three to two). Separation awareness is also emerging, which means your baby now notices — and protests — when you leave the room. Put it all together and you have a perfect storm for disrupted nights.
Signs you're in the thick of it
The 6 month sleep regression tends to look like: frequent night waking after weeks of longer stretches, short or skipped naps, extra fussiness at bedtime, early morning wake-ups and a baby who seems wired rather than tired. It typically lasts two to six weeks. If you're not sure whether it's a regression or something else brewing, watching patterns over a week or two helps — this is where a smart baby camera like Littlest's can quietly do the detective work, showing you when and how often wake-ups actually happen so you're responding to real trends rather than one rough night.
How to get sleep back on track
You can't skip a regression, but you can stop it from becoming a new normal. A few things make the biggest difference:
Protect the schedule. At six months, most babies do well with wake windows of roughly 2 to 3 hours and two to three naps. An overtired baby sleeps worse, not better, so guard that first nap of the day especially.
Give daytime practice. Lots of floor time to roll, sit and reach during the day means less skill-practising at 2am. Babies work through new milestones faster when they get plenty of awake time to rehearse.
Keep bedtime boring and consistent. A short, predictable wind-down — bath, feed, book, cuddle, cot — signals that sleep is coming. Try to keep the routine identical even when the nights are rough.
Pause before rushing in. Babies are noisy sleepers. Giving your little one a minute or two to resettle protects their budding self-settling skills. If they escalate, of course, go in — comfort and reassurance won't "undo" good habits.
Avoid building new crutches. It's tempting to bring back the 3am feed or start co-sleeping "just for now". Do whatever keeps your family functioning, but know that habits formed during a regression can outlast it.
When will it end?
For most families, sleep improves within a few weeks as the new skills consolidate and the excitement wears off. If sleep hasn't improved after six weeks, or your baby seems unwell, is feeding poorly or isn't gaining weight, check in with your GP or child health nurse to rule out anything else.
You haven't broken your baby's sleep, and you didn't cause this. Six-month-olds are simply busy little people — and this phase, like every other, will pass.
This article is general information only and isn't a substitute for professional medical advice. Always consult your doctor or child health nurse about your baby's sleep and health.
