P.I.
A few years ago they had a sippy cup that had a nipple that was silicon and a half moon shape maybe if you try one of those because he may not like the feel of the ard plastic if he is used to a nipple, that is if they still have them. My advice to you is keep trying the bottle. Remember your child will not starve and he will take it when he is ready to go back to the bottle or cup. Try not to over worry about his change in eating habits. I would ask your doctor about it and see what he sayd. My question is this how much baby food is he eating at each feeeding? Is he getting full from the baby food? If so you may want to cut the portion back so that he will take the formula. Good luck and remember in a very short time he will grow out of it.