I need your help ladies....

πŸ’™πŸ’™CindyπŸ’™πŸ’™

Okay I'm gonna try to explain this best I can bcuz I don't really understand what's happening.πŸ€”πŸ€”πŸ€”my babyboy turned 3months Jan 27th he is on nutragimen formula drinks about 4-4 1/2ounces each feeding. Allll of a sudden for about two weeks now he plays sigh the nipple where he will suck for a few seconds then turn away I have to walk with him as I feed him or sit and reallllyyyyyy be as patient as I can just to get through the bottle. Usually when he hits two ounces left he latches greatttttt. He's never did this before. He is on dr.browns preemie nipple due to level one being toooo fast for him. I have since then tried playtex bottles, maam, avent u name it I tried it and he refuses it all together. The doctor said its a phase but idk where this even came from...... Any ideas ladies how to handle this ladies?