switching formulas

Lilly

has anyone else ever switch from Hypoallergenic to a non hypoallergenic formula ? my babe is about to be 6 months old. when she was around 3 months she started having a reaction to my breastmilk. would have mucus in her poop, super fussy and gassy, and she also was diagnosed with severe reflux which she’s on pepcid for and has been a life savor. a cmpa was never confirmed but pediatrician suggested nutrimagen formula. she’s been on that since and has been fine. since introducing solids she’s aten plenty of things that contained dairy with no reaction. it’s getting harder and harder to find her formula. i asked the pediatrician about switching and they really had no advice. i have a sample of gentlease neuropro but i’m kind of nervous. has anybody else switched formulas like this ?