My 3 month old will scream two seconds after I take the bottle out of his mouth to burp him. He has bad reflux and gas so I have to burp him at least 3 times per bottle. It doesn't seem normal. I almost always end up having to put a pacifier in his mouth while I burp him because otherwise he's screaming and crying and can't get a burp out. He's not starving and gets fed every 2 hours like clockwork (that's when he cries for a bottle). He'll even do it when his bottle is finished and he's on his last burp when you know he's full. He doesn't stop until bottle is back in his mouth or pacifier is (sometimes even pacifier won't work) but like I said I know he's full,sometimes he's even "milk drunk". Any advice?