My DD had the same thing inculding hospitalisation
she was diagnosed with a milk and soy allergy and was on Neocate as well as another type that I cant remember as the neocate was the same it would allow her to gain weight but she still refluxed
I would ask ur doctor if there is another formula u can try that does the same thing (I know there is at least 1)
Oh btw doesn't the formula stink?? lol I hated the smell of it, it was like potatos or something lol