my ds is 12 weeks and is quite content, happy..but never really that hungry. he is FF and takes between 2 and 4 oz a time..he weighs just 10.12lb and is slowly putting weight on - about 5 oz a week. at night particularly he wakes a couple of times but barely feeds and in the mornings doesn't even seem hungry for a good couple of hours. i can't force the milk down..should i just accept this is the way he is or be a bit more worried?!