I am 17f and I believe that I am mentally declining.

I am seventeen and female, 5'8 and 120lbs. I take Risperdal and Adderall daily, as well as Xanax specifically for manic episodes. I have smoked regularly since I was fourteen, I only drink on occasion. I am diagnosed with DID and bipolar, and my mental health has been getting exponentially worse in the past four months or so. In contrast to previous stretches of derealization, paranoia, and erratic behavior, this one has been accompanied by a perpetual confusion I can't get rid of. I can't speak properly like I used to, I can't understand complex texts properly, I am dizzy and my head constantly feels pressurized and foggy. I am delirious despite sleeping enough, and this daze has now lasted months. I am currently struggling to write this in a way that is clear and I keep going back to fix simple spelling and grammatical errors that I did not used to make. I genuinely find it difficult to hold normal conversations with my peers and I am beginning to get frightened as time goes on and it gets worse and I get more and more confused. I am convinced I have childhood dementia which I understand is irrational but nonetheless consistently in the back of my mind. I am considering getting off of the Risperdal in hopes that it is the cause of this as opposed to anything more damming, but I am tentative to get off the medication because it is the only anti psychotic that has worked for me and I have had episodes after unintentionally not taking it. If anyone has any ideas or opinions or advice I would be very grateful