How heavy was your baby when he/she first slept for 8hours straight?

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My DD is 4.5months old but was 2 months early and small for dates so still only weighs around 10lbs.

She sleeps well but her limit is about 6hours at night. I suspect this is size related. Books and other posts generally talk about ages which is hard to interpret in my case.

How heavy were yours when they could go for a whole night?

Thanks for the help

25kgs (nearly 8)

Both at exactly 12 weeks on the day from 7pm to 7am. Youngest was born a week early, so he would have been eleven weeks actually.

It really isn't weight related. Mine was 98th percentile and it didn't happen until 18mths. 6hrs at that age isn't bad!!

DS was probably about 8 months old when he slept for 8 hours without waking or needing a feed.

DD1 and DD2 were 8 and 10 weeks respectively when I could put them to bed at 8pm knowing they would not wake until 7am. I am eternally grateful for that fact!

They were all bottle fed, and 7lbs, 6lbs 8oz and 7lbs 5oz at birth.

OP you're extremely lucky to have that much sleep at that age, off a premature baby. my son was 7 weeks premature.

we were told in the hospital to feed every 3 hours (and he was MUCH bigger than your girl tbh - nearly 6 lbs at birth despite being so early, was 12lbs at his due date), and to expect him to sleep like absolute shit for the first year since that's normal for premies.

he slept no more than 45 minutes at a time, feeds (bf) allllll night long, for well over a year. nearly killed me. then one day it was like a switch flipped at it was 10-12 hours at a stretch.

they also say to expect night terrors and sleepwalking when they're older.

My baby did her first 12 hours on Sat night at 16 weeks. She's roughly over 11lb now.

Only got 9 hours out of her last night!

The fact that many people have babies/children who don't sleep until they are 18 months or 2 or 3 or even 6, and who clearly weigh a good deal by then, does not mean sleeping through has nothing to do with weight.
There are many reasons why these babies/children wake at night. It could be hunger,due to not getting all of their calorie needs for 24 hours during waking hours, it could be because they cannot self settle after waking, it could be due to habit ....or loads of other reasons I can't think of.

However, there IS a relationship between weight and when a young baby can sleep through. Before they can sleep through, their tummy needs to be able to hold enough food for them to sleep longer without needing to feed again to fill it up,due to tiny size. This does not often occur before a baby is 10 to 12lb.

This does not mean that even baby who reaches this weight will sleep through. As mentioned above there are numerous other reasons which might mean they don't, but beyond this point, it is unlikely to be weight keeping them awake, but UNTIL this point, weight WILL be a key factor.

The OP is enquiring about her young baby and wondering when is the earliest she can possibly expect him to sleep through in terms of weight, hoping the other factors which might delay sleeping through are not there. Of course those other factors might be there, but they might not be. Therefore, I would say that one baby reaches 10lb or so it becomes possible to sleep through, but not inevitable by any means.

The fact that many of your children weighed several stones before they slept through, does not mean it is totally unrelated to weight for small babies.

There may be a relationship between weight and being able to go 8+ hours without food, but that isn't the same as sleeping through.

Though given that some posters have mentioned very tiny babies who slept long periods, even that relationship isn't clear cut.

dd is 15 weeks and she has been sleeping 11 hours a night for about 3 weeks

I have no idea how as its nothing I have done

12 weeks. Mix fed.

And was tiny. 5lb ish at birth.

2.5yrs. Still waiting. I hate silent reflux

weight and sleeping not really related DD slept 7 hours at 8 weeks (7lbs) and 11 hours at 4 months about 11lbs

some babies sleep mine did others don't I'm not a supermum she just slept she is contented and still is

DD was about 4 months but stopped at 1
DS1 was about 8 weeks
DS2 was 16 months
DS3 was just under two days old. He didn't wake up properly until he was about a week old and even then I had to set my alarm to wake him and feed him at night. At 4 months he was sleeping 10-11 hours a night and 4-5 hours during the day.
Even at 2 and a bit every so often he sleeps right through the afternoon and would happily stay there until the next morning, but I am mean and wake him for tea.

DS was doing 7 to 7 (with a night feed at 11) until he was 5m. He dropped the night feed at 5m.

I agree that weight/premature baby has nothing to do with it. I think it has more to do with how long does the baby nap during the day and at what time these naps take place. (Simply put, a baby who is allowed to have very long naps during the day will be awake at night, just like any adult would do)

...or genetics, some children just do not need much sleep.

DD1 by 8 weeks at the very latest. She was 6lb 12oz born. Slept 6 hours straight the day she came out of hospital. Took a few weeks to get her to do this at night, rather than during the day time. She was exclusively breastfed.

Dd2 by 6 weeks at the latest. She was 7lb something born, had one bottle in the evening, but otherwise breastfed.

Both had been doing 6 hours from getting home from hospital (12-6) but it took me a while to extend the night feed. I followed the baby whisperer (that ages my daughters!) and did the whole EASY thing with the cluster feeding in the evening. It worked for us, and by two months both my girls slept through the night.

DS2 was seven YEARS old in May - and has yet to sleep for eight hours!

Don't remember with DD so she can't have been too old. Definitely before 6 months, though.

DS on the other hand was 12 months before he slept through

Nearly killed me with sleep deprivation... Had little to do with day time naps or what he ate... there was no pattern at all which was hard to take. Once he sorted it out it settled down very quickly

DD was 7 weeks (and about 10lbs ish?)

DS was 9 weeks (and more like 12lbs)

DD was much better, would go down at 7pm and apart from the dream feed at 11 that would be it until 7am.

DS on the other hand, frets til about 9pm, then sleeps, wakes for dream feed and sleeps til about 6am.

DS is heavier.

So I don't think it has anything to do with weight - sorry!

She is medically speaking sttn doing 6 hours, it just doesn't feel like it. Ds did 12 hours when night weaned at 7.5 months, so not voluntarily.

He was a similar size, 9th centile. He did 7pm to 3am from 4 months old. One feed then back to sleep til 7am.

Before then we were dream feeding but it didn't make any difference. Still feeding ay 3am.

OP just don't worry about sleep if you can really help it! I found the best way for us as a family to get as much sleep as possible was to breast feed and cosleep. If done safely you can latch baby onto boob if they wake and go right back to sleep (they will generally also go back to sleep within minutes and unlatch themselves). I found eliminating all expectations about 'sleeping through the night' made everything much less stressful and tiring! Babies often need to feed during the night, they have masses of growth spurts in the first year, teething discomfort and all that other stuff! Try not to fret, your baby will sleep when she needs to.

In answer to your question though, mine slept through from 9/10 months. Totally out of the blue and has done pretty much ever since (now 13 months).

Yes, we took pretty much that approach cherrylola - I kind of gave up on having any expectation of "sleeping through" but I enjoyed co-sleeping with my babies - was better than sleep deprivation

Not sure about weight but baby 1 was about 6 weeks old when she started sleeping from 10pm to 8 am without waking, and before that was a 4 hourly feed baby. She was nearly 9 pounds at birth and 2 weeks overdue.

Baby 2 was more like 9-10 weeks old to sleep from 10pm to 6 ish, but again was a 4 hourly feed baby beforehand. He was born at 37 weeks but even then was about 9 pounds.

I've beenextraordinarily lucky in both cases - both ate large amounts, stocked up for the night and decided to set their own regular schedules. It all went to pot during teething though, but apart from blips both are still good sleepers.

Should mention ours didn't usually go to sleep before 10pm until they were about 9 months old, then we gradually moved that last feed back (making it a dreamfeed when they were sleeping earlier). Both were mixed fed, and that last feed was generally a formula feed (about 240mls worth).