Acid Reflux😪 hurting my baby

Thalia • Baby #2🤗
So my 3 week yr old baby has acid reflux and bad I tried Everything besides changing her milk because I breastfeed. Idk if that would make a difference I try different ways to burp her but she still seems to be in pain doctors gave her medication but I see no difference 😪 Any of you ladies had/has a baby with the same problem? What did you do to make it better for them?