I have a lovely healthy 9 week old boy who is bottle fed. We had to wake him for feeds every 4h at the start because he lost a lot of weight but recently I've noticed that he is incapable of sleeping back 3.30am. Now I'm not complaining because he goes down at about 9.30 so he is definitely sleeping for a good stretch but I was just wondering how others have gone about encouraging them to sleep longer. On top of that, he wakes between 6.30-7.00 but doesn't want to feed, he's just "up" for the day then conks out for a nap at about 8. Any advice would be great! Thanks