I Unfortunately have the same problem you do. I believe I have HPPD and I am trying to get through school with a poor ability to concentrate, debilitating brain fog, DP/DR, and anxiety. I could tell my Adderall was making my symptoms worse but I had no choice but to take it. When I wouldn’t take it I had little-to-no symptoms. I figured I could just take it until Christmas break and figure it out from there… now I have the symptoms all the time, whether I take my adderall or not. It might only affect me bc I got my HPPD from mdma but definitely be careful. Could be worth trying though if you are really struggling. Just proceed with caution.
what I found helped ease my symptoms is going on a histamine free diet and taking Famotidine. I got my HPPD after recovering from long covid so sometimes it’s difficult to determine if I have long-covid or if it’s HPPD but I believe it might be a delightful little combo. Could be worth trying as well. As far as ADD symptoms, I’ve seen a lot of people mention taking magnesium. Maybe try looking into that as it’s pretty cheap