I had heaps of problems getting Ella to take a bottle when she was 3 months and in the end I have to give up and waited until she was 6 months and she took is first time (strange baby). Does he drink water from a sipper cup? depends on how much formula you have to give him, but you try it in the cup???? I think one of the reasons Ella took the bottle 2nd time around was that she had gotten used to drinking from a cup.....