Bottle recommendations

My 6 month old is currently using tommee tippee advanced anti colic bottles and we’ve tried boon nursh bottles which she took to ok but her reflux is at an all time high and she’s on Pepcid but that doesn’t seem to be doing much at all. She’s on Enfamil AR for the reflux and EXCESSIVE amounts of spit up. And she’s going through a phase where she’s near impossible to burp. We’ve tried nutramigen per her pediatrician but made spit up worse and ultimately cmpa was ruled out so I’m thinking maybe try a different bottle. And suggestions and recommendations are appreciated