We ended up going for it and changing his milk. I was really torn but in the end we felt it was the best thing to do. We went half and half for 4 bottles then changed right over. He likes the taste much better and is eating more at every feed. His burps also don't seem as wet (likes he's spitting up then swallowing it) and he only got the hicups once yesterday instead of after every feed. He was a little gassy and cried for about an hour last night but went to bed well and slepr from 8:30-5:15 (except one wake up for his sucky at around 2), and then back to sleep until 8. Considering I thought he would have this major belly ache and be up all night, I am pretty happy. He's having a pretty good nap right now and I hope that he continues to do well today.
It's Sunday already ... Sigh.