So, wait a sec here, you commited a criminal act by assaulting someone, plead insanity (which effectively means: Your Honor, I was so fucked up I could not understand that by assaulting someone I was commiting a crime), and now you're upset that the doctors are treating you as a criminally insane person? What did you expect would happen? Were you aware that insanity is not a "get out of jail free" card?
Honestly, you're working against a stacked deck here. It sounds to me like you've given the judge all the ammunition he'd ever need to keep you doped up on antipsychotics. You committed a violent crime, presumably are known to be a "drug user", and have a combative attitude. That means you're a possible risk to yourself, so therefore you get medicated whether you want it or not. I'm frankly suprised you didn't end up in a psych ward.
I'm not an expert lawyer but I would suspect that if it became known you feigned insanity to avoid a conviction, that's gotta be contempt of court, malingering or something. So I don't think you have much option to reverse the decision.
I hate to be That Guy, but going to jail for a month would have been less hassle overall. If you can't do the time, don't do the crime.