Kid's reflux is ruining my sanity

Our 3-month-old has silent reflux and it's absolutely brutal. She's uncomfortable, spitting up constantly, arching her back, not sleeping well. The pediatrician prescribed Zantac but we heard about the recall and now we're paranoid. They want us to try Nexium but that's not even FDA approved for kids this young. Meanwhile my wife is spiraling about whether we're causing this by bottle feeding. Nothing online is consistent. Has anyone actually dealt with this and found something that worked?