I’m so sorry that you’re going through this. Maybe she’s outgrown her prevacid dose and needs a higher dose. Having gone down the feeding aversion route, I know how awful it is, and would definitely try the higher dose of prevacid. Try it for a few weeks and see if it makes a difference. Is teething another possibility? Can you try a bit of motrin an hour before a feed and see if that changes things? Alternately, what about trying some mylanta supreme before a feed to soothe her throat. In the end though, I’d definitely talk to the doc, and get her dose increased. I think that’s probably the answer. Good luck.