My sweet little refluxer really seems to LOVE the new foods I'm introducing to him. He's had pureed peaches, squash, bananas, and sweet potatoes in addition to the staple rice cereal. My question is: Why does he all of a sudden go from wide open, bird-like "can't shove it in fast enough" mouth to screaming crying and arching his back? Is his reflux acting up and bothering him? He's on meds for his reflux, which has helped the spitting up tremendously and he's just turned 7 mo. old. Any advice???