Twin Sleep: What to Expect in the First Six Months
By Jennifer James, UK twin mum and author of Outnumbered From Day One, the honest guide to life with twins.
Sleep with twins in the first six months is the topic that generates the most questions, the most anxiety, and the most contradictory advice. This is an attempt to give you a straight answer to the questions that actually matter.
What normal looks like
Newborns sleep a lot and at unpredictable times. This is normal. Their sleep cycles are shorter than adults, they wake frequently to feed, and they have no circadian rhythm yet. This applies whether you have one baby or two.
With twins, the maths means that even if each baby is waking at normal intervals, the combination of two schedules can result in very little unbroken sleep for the parents. This is the reality. It is temporary. It is survivable.
The goal in the first six weeks is not a schedule. It's keeping two babies fed, kept warm and safe, and yourself functioning well enough to do it again. Structure comes later.
Do twins wake each other?
Less than most parents expect before the babies arrive. Twins have been sharing a space since before birth and tend to habituate to each other's sounds. Most twin parents find that one baby waking and crying does not reliably wake the other, especially from a deep sleep.
This changes as they get older and their sleep becomes lighter and more predictable. But in the early months, the fear that one will always wake the other tends not to materialise in the way anticipated.
Co-bedding: is it safe?
Co-bedding means placing both twins in the same sleeping surface together. Current guidance in the UK is that co-bedding is acceptable in the early weeks if both babies are healthy and you follow safer sleep guidelines: firm flat mattress, on their backs, no loose bedding, no sleeping surfaces they could roll into.
By around four months when they're more mobile, separating them into their own cribs or cots makes more practical sense.
The Lullaby Trust has current UK guidance on co-bedding and safer sleep for twins at lullabytrust.org.uk.
Getting them on the same schedule
The single most effective thing you can do for your own sleep is work towards synchronising the twins' schedules, particularly their feeds. This means feeding both at the same time rather than letting one sleep while you feed the other, even if it means waking a sleeping baby.
The practicalities of synchronised feeding, breast or bottle, are covered in detail in the feeding twins guide.
This feels counterintuitive. You have been told never to wake a sleeping baby. With twins, waking the sleeping twin to feed at the same time as the waking one means you have a longer stretch of sleep between feeds. One double feed at 2am is better than a 2am feed followed by a 3.30am feed.
It takes time to establish. Keep going.
White noise
Worth having. A white noise machine running through the night masks environmental sounds and helps babies stay asleep through noise. It also becomes a sleep association, which means over time the sound alone signals that it's sleep time.
A portable version is useful for the buggy and the car so the association travels with you.
If you're still working out your kit list, white noise machines feature in the twin baby equipment guide.
When does it get easier?
Most twin parents find the first six to eight weeks the hardest. By three to four months many twins are doing longer stretches at night. By six months, with consistent bedtime routines in place, a significant proportion are doing a long stretch of five to seven hours.
It is not linear. There are regressions. There are weeks that are harder than the week before. But the trajectory, overall, improves.
Sleep is one of two full chapters on the 0-6 month period in Outnumbered From Day One, with routines, what worked and what didn't, and honest detail on the bits the parenting books skip over.
FAQ
Should twins sleep in the same room? UK safer sleep guidance recommends babies sleep in the same room as a parent for the first six months. With twins this means both in your room. Two cribs or a single larger crib for the early weeks.
How do I get twin babies on the same sleep schedule? Feed them at the same time, even if it means waking the sleeping twin. Start a consistent bedtime routine from around six to eight weeks. It won't be perfect but the direction matters.
Do twins sleep better together or separately? In the early weeks, co-bedding is fine if safer sleep guidelines are followed. Most families separate twins into their own cots by around three to four months. There's no strong evidence either arrangement produces better sleep.
Is white noise safe for babies? Yes, when used at a reasonable volume. Keep the machine at a distance from the babies rather than directly next to them.