I really need an advice on how to smoke less..

Well.. I suffer from bpd and ptsd (im stable on meds). I'm stuck in a cycle of just living high, I don't remember the last time I was actually sober except for a couple T-breaks that only lasted a week at most, I smoke between 80-100 grams and month... I've been smoking weed since I was 14 (im 24 now) and I don't know how to be sober, it feels like days never end when I tried being sober, and everything i did and every interaction I had with people felt like a hustle.. I really don't know how to quit or at least smoke less.. any ideas what to do?