Neocate Syneo vs Neocate

Hi everyone, my EFF baby was diagnosed with CMA since she was 3 weeks old, we switched to allementum and had to switch to Amini Acid formula 2 weeks after that. We gave her Neocate. One thing she started doing after a week on Neocate was kicking and squirming while feeding. It would usually happen toward the mid to end of each feeding, she wants to eat and is sucking but kicking and almost like she is trying to sit up with her little body even when I’m feeding her upright. This got better for a while and never happens during night feeding. She is generally a calm baby except that wants you to be held most of time which we do. She is now 3 months old and after every ounce of milk she stars moving head from side to side, squirming, kicking bottle out of her mouth with her hands trying to suck on her hands while eating, and trying to sit up. I always burp her every ounce, today while burping she starting spitting her saliva and making a face like she has something sour in her mouth?? I’m thinking maybe she has reflux and maybe I should give her Neocate Syneo?? I prefer not changing formula but since this is disrupting the feeding im thinking maybe the probiotics might help? Are Neocate and Neocate Syneo really the same besides prebiotics? Please lmk if you have experience with the kicking and or know about the Neonates! Thank you!