Some more advice

If I may give you some advice and only giving it because I actually work in the field. I would take my child to a ped developmental specialist (MD) for a clear diagnosis. There could potentially be other causes for the issues that are not obvious to a therapist. Keep in mind, OT's PT's and ST's are trained but they are not doctors and we often fail to see problems that may be more obvious to a doctor. He or she may send you for further testing to see if there is a functional problem that may be causing the feeding issues.