For starters, you are depending on anti psychotics to gain weight & not your own eating habits? Therapy will help you get to the healthy weight & stay there without the need for the meds to get you there & then the bad thing about meds is that they can take you beyond your healthy weight. When you depend on yourself, you can get to that healthy weight & use your CONTROL to keep yourself there rather then using the CONTROL to loose.

Therapy really does help & they give you good points on how to stay healthy & also a place to be accountable.