Two blocks or alternate nights with a newborn: which fits?
The short answer
Two blocks or alternate nights with a newborn? Two blocks gives each adult a long sleep every night but a shorter night on duty. Alternate nights gives one very long sleep every other night, with a long night on duty. Try one for three or four nights and swap if it is not working.
Two blocks or alternate nights: what is the difference?
Both are ways of sharing the same problem, a baby who wakes and adults who need sleep, and they simply cut the night up differently. If you are still deciding on the basics, start with how to split night shifts with a newborn, then come back here to choose a shape.
Two blocks divides each night in two. One adult is on duty until a set time, then the other takes over, so everyone is on duty for part of every night.
Alternate nights gives one adult the whole night, then the other the next. The off-duty person gets a full night, then has a full night on.
Which fits your household? A side-by-side table
This table compares the two shapes on the things families most often weigh up, such as sleep length and handovers. It is a way of thinking, not a verdict.
| Question | Two blocks | Alternate nights |
|---|---|---|
| Longest unbroken sleep | Several hours, every night | A whole night, every other night |
| Length of a night on duty | Half a night | A full night |
| Handovers | One every night | Usually one a day |
| Suits an early riser | Yes, they take the early block | Harder on work mornings after a duty night |
| Suits someone recovering from a birth | Gentle, shorter duty | Fits if they take the off night more often |
| Works with a helper | A helper takes one block | A helper takes one whole night |
| Works solo with occasional cover | One block, a few nights a week | One cover night a week |
If most of your answers sit in one column, start there. If they are split, try two blocks first, because it is easier to move to alternate nights later than the other way round.
How do two blocks work in practice?
Each adult takes half of the night, with a swap at a time you agree. Picture a night from about 7pm to 7am: Adult A is on duty from 7pm to 1am while Adult B sleeps, then they swap until 7am.
The swap does not have to land on a neat hour. It can follow the baby, for example after a particular feed. What matters is that each person knows when they are off.
You are never on duty for a whole night, so tiredness is spread out. The harder part is that each night is still broken for someone, and a handover is needed every night, so keep it short. A simple one is in a night handover script for parents.
How do alternate nights work?
One adult takes a whole night, from bedtime to morning, and the other sleeps, ideally somewhere they will not hear every noise. The off-duty person gets a proper night, and some people feel much more themselves after one full night of unbroken sleep.
The trade-off is that a full night on duty is long and the next day can be hard. The “off” night may not feel off if you are in the same room as the baby, or listening out regardless. Plan something kind for the morning after, such as a short rest while someone else has the baby. Small breaks for new mums has ideas.
What if I share nights with a helper some of the time?
Use either shape on the nights a helper is there, and keep your own plan small on the nights they are not. A helper might be a relative who visits twice a week, a friend, or someone who works away.
- On nights when a helper is there, use two blocks or give them a whole night.
- On nights on your own, aim to go to bed as soon as the baby settles, and leave everything else.
- Give your helper a short written note so they do not need to ask you questions in the dark.
Even one block of two or three hours can make a real difference.
What if I am on my own all week?
You can still borrow the idea of blocks, with someone else covering a short stretch for you. Ask someone to take the baby for the first part of the evening so you can go to bed early, or arrange one morning a week when someone else takes over after the early feed.
If asking feels awkward, how to ask for help with a newborn offers wording you can copy.
How do I know if the plan is working?
After three or four nights of a plan, ask each other a few quiet questions to see whether it is working:
- Did each of us get at least one longer stretch of sleep?
- Do the handovers feel calm, or tense?
- Is anyone more worried or low than before?
If something is off, change one thing, such as moving the swap time by an hour. Babies vary a great deal, which is why Mama, Too shows ranges instead of fixed times, as explained in can you predict when your baby will nap.
If you are feeling persistently low, anxious or unlike yourself, please talk to your GP or health visitor. The NHS has a page on sleep and tiredness after having a baby.
What about safe sleep?
This guide does not give safe-sleep advice, so please use the trusted sources below and ask your midwife or health visitor if you are unsure. The Lullaby Trust has safer sleep advice, and the NHS has information on helping your baby to sleep.
When you are exhausted, it matters to know where and how your baby is sleeping. Your midwife or health visitor can answer questions too. More ideas on this theme are under sharing the night.
Sources and further help
- NHS - Helping your baby to sleep
- NHS - Sleep and tiredness after having a baby
- The Lullaby Trust - Safer sleep advice
Questions
Can I mix two blocks and alternate nights?
Yes. Some families use two blocks on weeknights and alternate nights at weekends, or switch when someone has a hard day. The best plan is the one you will actually keep to.
Which is better for a newborn who wakes every couple of hours?
Neither is better in itself. Two blocks spreads the waking across both adults, while alternate nights lets one person recover fully. Try one for a few nights and see how each of you feels.
How long do I try one before changing?
Three or four nights is usually enough to tell whether each adult is getting at least one longer stretch of sleep. If not, change one thing, such as the swap time.
What if there is only me?
A smaller version works: one protected stretch in the evening or early morning, covered by a relative or friend, a few times a week.