Struggling with weight gain from MS diagnosis

I’m struggling with weight gain from my MS. I used to be active multiple times a week with MMA but I had to cut back and eventually cut out once the MS diagnosis was confirmed. Symptoms were making training difficult. Now I try to do cardio yoga and I’m doing my best to follow AIP, but I’m still stuck at 175 when before I was much smaller and I can’t go back to my MMA routine. I can’t go like that anymore. Anyone have tips on losing weight with MS? If it helps I’m on Dimethyl Fumarate, Lamictal(Lamotrigine), Prozac (Fluoxetine), Prazosin, and Trazodone.