[m_eiman]

Here's a nice graphic showing a baby's sleep pattern during the first 15 weeks:

http://www.eiman.tv/misc/somnrytm.jpg

Since the text is in Swedish, here's roughly what it says: Every row is a day, black is sleep, white is awake.

[gambiting]

As a parent of an 8 month old baby who wakes up literally every hour - what is that solid line from 10pm till 6am at around 10 weeks :P Feels like fantasy

[shawabawa3]

there's something wrong with that baby

They're sleeping _way_ too much for 15 weeks. two 3-4 hour naps?? 8 hours overnight is definitely possible but rare

[naikrovek]

no. it's gonna differ from family to family, but it is not abnormal for a baby to sleep 18 hours a day, overall.

[nottorp]

If my kid slept like that when she was a baby, maybe we'd have two children now...

I've heard of sleep patterns like that but always thought it's just marketing.

[lopis]

Oh wow. Babies sleep a lot.

[necovek]

As some parents would attest: some babies sleep a lot. They all wake up a lot :)

[mehphp]

They do, however, it's the fact that they wake up during inconvenient hours that's the hard part :)

[shawabawa3]

This chart is just bullshit, there's absolutely no way a 15 week old baby sleeps from 11pm to 7am, then from 8am to 12pm, and then _another_ 4 hour nap from 2-6pm??, that's absolutely insane. Like, a doctor would be extremely worried about this baby

[naikrovek]

no. your babies may not do that, but it is considered normal.

one of my four children slept 18 hours per day, in three 6-hour sessions, for many months.

[Nebasuke]

The chart is slightly misleading, in the sense that the ranges shown are more like the very strong average sleeping patterns across babies. It doesn't mean that none of them woke up for a quick feed. But even without a feed, sleeping from 11pm-7am, is certainly not abnormal.

16 hours of sleep also falls within normal for a 15 week old baby for most sources I've seen, so I'm not sure why you'd be worried? I had a look, and my daughter was around 15-16 hours. No big naps during the day, but she slept 7pm-6am maybe waking twice for feeding.

[madcaptenor]

They do, but never when you want them to.

[folli]

Trouble is, they also wake up a lot.

[throwaway744678]

Every time they go to sleep, they eventually wake up !

[Cthulhu_]

I'm jealous, lol