Any advice on how to cut back

I’ve been ripping carts pretty much everyday since I was 14 with maybe like 1 months worth of not ripping carts not consecutively,I’m 18 now, I feel genuinely brain dead and I’m dead silent around everyone all the time and have no hobby’s, every time I join something I end up hating it because I’m quiet, I also vape and drink and have done harder drugs as well, I’m also almost never hungry I eat like 1 meal a day and feel nauseous all the time and the carts help with the nausea, but I’ve been so paranoid about everything recently, all I do is get high all day everyday, go to school and work and it’s just not as fun anymore, I don’t wanna quit, I don’t think I ever will but I wanna cut back, I ordered a hunger supplement, and this reishi mushroom and ashwaganda blend, but waking baking everyday and ripping the cart every hour isn’t fun anymore but I feel worse without it.