My ds is 7 weeks and a good day eater. He wakes between 11-12pm and takes a full feed. Last few nights he has woken again between 2.30-3.30, ive offered him a bottle and he's not been hungry, struggling on the bottle and spitting it out and crying. After re offering the feed a few times unsuccessfully I eventually got him back off to sleep and he woke at 5.15 and was hungry. He does settle himself to sleep in the evening so it's not this- any ideas what I can do? It's very frustrating for both of us!