My baby has been drinking formula for 2 weeks now. Similac pro comfort (purple container). He’s been good with the formula but now when he eats, he starts crying and pushing out the bottle when it gets to about half way of the feeding. I try and burp and hold him to give him a little break and continue the feeding but as soon as I put him in the position to feed him, he starts crying frantically. I changed his diaper and did everything I could think of. He seems fine as soon as I’m holding him in a soothing position he likes. It’s always right when he gets back into the position he eats in. Can it be that he associates it and doesn’t want to eat anymore? Or do I need to change the formula? I’m lost and I need help.