2 month old acid reflux

sierra❤️

My two month almost 3 month old daughter has severe acid reflux, we’ve switched formulas numerous times, she’s currently on similac alimentum. Has been prescribed nexium as well that you mix with water and thickens, still no relief. Any advice helps on what helped your little ones, I’ve even switched her bottles, I’ve tried a lot of the anti colic bottle brands, the only ones that seem to help are the avent anti colic with the inserts, but after so long even those quit working. Can anyone recommend a better bottle or anything I could do to make this better for her :(

It’s so bad that she will literally scream in pain sometimes as it’s trying to come back up.