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.
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.
They're sleeping _way_ too much for 15 weeks. two 3-4 hour naps?? 8 hours overnight is definitely possible but rare
I've heard of sleep patterns like that but always thought it's just marketing.
one of my four children slept 18 hours per day, in three 6-hour sessions, for many months.
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.