Sorry.. I feel like this is long and disorganized but I am at the end of my rope with this!

My daughter will be five months old next week and for the past two months we've had time periods (days, or parts of days) where she simply refuses to eat. She will seem hungry but will only eat a little bit - maybe 1-2 ounces - by bottle or breastfeeding. I obviously can't fully tell how much she is getting by breastfeeding but I do know it's not a full feeding just based on how full I feel.

For awhile I thought she had thrush which would make eating painful, then I thought it was acid reflux making it painful. She will start to eat, then pop off and angry-coo at me. It's like she is chastising me for something, she gives me this big wide-eyed look and is all indignant. Up until recently I'd been able to rock her and get her sleepy and she'd eat then - but now she's refusing to do that too. I'll have to walk her around jiggling her to get her to fall asleep and she'll fall asleep with her mouth moving like she's eating but still won't eat if we try to feed her!

At daycare last week she had a few days where she refused all but maybe 1-1.5 ounces of each bottle. But she seems hungry, shows all the cues, then gets super pissed if you try to feed her. This week she's been taking some feedings but skipping at least one a day. It's usually a major struggle for them to get one of the feedings down her.

In the past, we've upped her acid relux medication and it got better. But I think we are at the maximum now and it doesn't seem to be helping. I wonder if it getting better with more acid reflux meds was just a coincidence. The doctor is unconcerned b.c her weight has been normal until now. But I just don't think it's normal for a baby to skip feedings. I don't think we should wait until she's dropping weight or is dehydrated to do something and I feel in my gut that there is something wrong. But no one seems to want to listen to me because her cheeks go on for days and she seems to be thriving.

So - my questions: Did your baby ever skip feedings? Did you ever find a reason behind it? If so, what was it? Is it normal for a baby to act hungry and then not eat?!