To sleep over 6 hours? He was on breast non-stop all day yesterday, and since finally dropped of around midnight, is sleeping. I got him up after 6 hours sleep, fed a bit - he didn't wake up really, and now continues sleeping. I am somewhat worried, as he has a history of low blood sugar after birth and needed formula supplements, although he was on breast only for the last week. He is gaining weight well, is on 50 centile, but haven't done more than 3 hours sleep stretches until now. Just don't know, whether at 3 weeks I need to be waking him up for feeds if he sleeps long time?