Our little girl, now 15 months, also had some issues with acid reflux as a teenie weenie. Once we switched her formula to soy, and limited the amount she would get per feeding, the problem stopped. Her appetite was always very good (she earned the nickname Moo), so if we let her eat as much as she felt she wanted, it would be too much for her tiny tummy, and would start to come back up. Your doctor should be able to suggest the right amount to offer per feeding. Her stomach is probably not much bigger than a quarter right now.
Our pediatrician did not encourage adding any cerals to her formula, for several reasons. When so young, their system really can't process it yet. Some warn it's not good for baby's digestive tract too early. Also, adding it into formula would have made teaching her to eat cereal on its own more difficult. He felt keeping the two seperate was the best way to go. I know different people use different approaches, just letting you know what ours suggested for the same issue...
Also, we found that the best nipple/bottle combo for us was Avent. It's supposedly the most like mom's nipple. Doesn't let contents of bottle out too fast, or too slowly.
A piece of good news: in spite of having been on soy due to reflux, when it was time to switch her to whole milk at 12 months, she had no problems digesting milk at all. We just starting mixing a little more into her formula at a time, to help her adjust to the taste, until it was pure milk. Now, 'nilk' is her favorite drink.
Good luck!