What is the best way to reduce spit up in 2 month old baby with acid reflux?

No matter how many burps she has, my daughter is still spitting up a lot after some feeds. Pediatrician diagnosed acid reflux and said to keep her upright. It seems to bother her, especially the really big ones. Any tips appreciated.
sorry, I meant to mention she is stricty breastfed.

By: hopebaymama