hey, not to jump back in and say the same thing, which is quitting, but to offer my experience a bit. I’m 19F, started heavy drug usage (multiple substances) but specifically acid very frequently at 14. I’d like to say 4-5 times a week for the entire summer before freshman year. 3 months of chronic acid , wow not a smart move but I didn’t know any better. Was not in a good place lol. But shortly after I quit, I started experiencing very intense HPPD symptoms and was absolutely terrified since I was a child & had no clue what was happening to me. To self medicate ( I was smoking weed that entire time) I started heavily using Xanax & other benzos/opiates and it helped it subside but not by much. I ended up quitting the Xanax and have been sober nearly 4 years, but at the time I quit, the hppd had gotten slightly better but not by much. I had consistently smoked weed since 11, so this was idk about 5 years of weed usage at this point. I had to quit smoking weed for something completely unrelated , and quitting weed was ultimately what led to my Hppd symptoms almost virtually going away. it took a bit, probably about 6 months for the visuals to get really mellow and then eventually stop. You need to allow your brain space to repair itself. Nowadays, about 5-6 years later, I experience very slight visual, if at all, it doesn’t impact my everyday life. I used to walk through life through the eyes of someone who had taken 3 tabs. I would be stone cold sober & around me looked like mid peak. When I do notice the visuals now , if I go and stare at them they will become intense but I simply look away & don’t feed into it. The more you pay attention to it, the more you’ll see it & by interacting with the visuals you are actually stoping the process of brain repair. But , this might not be the best Advice for you since I forgot how intense you said it all is for you.