@lilaa_dunne16, I've tried to give him formula on two different occasions with two different bottles and he won't drink from them. I didn't have this problem with my oldest so I'm extra lost.
@cubanese, I'm not sure in ounces but he still eats every 2-3 hours sometimes sooner and I have one breast that produces more than the other. The other doesn't even produce an ounce when I pump.
I don't produce enough and don't have time to pump, so my daughter gets formula when I'm at work, but she was never picky one night I just gave her formula and she did fine with it... let him root to the bottle when for the first few times I would say and watch him for a reaction, you might have to try a few different formulas before you find the one he likes