C.R.
Hi. My son had reflux too. I tried two different drugs before finding any relief. We ended up using a liquid form of Zantac that made a HUGE difference in his behavior. It was flavored a very strong peppermint flavor but in time he didn't care because it helped him feel better. ") Being upright with the tummy not being bent is the most comfortable position to be in for her. It's very painful for them. Most of the time they have an ulcer in their esophagus and when the fluid is running up it gets more inflamed until it heals with meds. I would bug the crud out of the doctors until something works. Also look into a crib sling called a Tucker sling that keeps them in a more upright position while sleeping. We have one and it HELPED so much when he was little!
Best Regards,
C.