Have you spoken to your doctor? My DD had reflux, she would squirm & cry when feeding, then cry after feeding, bring back milk mixed with a clear fluid (acid) & generally was horribly unsettled for a couple hours after feeding.
Had a good chat to my doctor around 3 months & we started on gaviscon & omeprazole. She was like a different baby, I couldn’t believe it. Took a couple days but suddenly, she fed like she was starving, would actually nap down in her Snuz & suddenly became this happy, cheery baby!
Weaning was also helpful for us. We started on purées at 5 months on the advice of our doctor. We still took the meds but the food stayed down and seemingly kept the milk she had before eating down with it. Once she got onto more solids at 6 months, we were able to stop the gaviscon as she just wasn’t as sick. We stayed on omeprazole until 10 months, at which point she was down to two bottles of milk & a range of meals.
She still sometimes gets a bit heartburny I think, she’s two now.. she’ll burp after some milk and her eyes water & she grimaces! But otherwise, she’s all good!