Day 2 I’m quitting for good

Hey guys so I’m 19 years old I’ve been smoking for the past three years straight damn near and I finally decided my life would probably be better if I quit. I just had some questions to ask so I would only ever smoke at night and I would hit my cart if I had one periodically from 10 PM to like 5 AM. And whenever I would have bud, I would do one bowl out of a one hitter and call it a day. I’m 6 foot. I weigh 135 pounds and I have little muscle or fat I don’t really have strong cravings. I was really just wondering what were some ways to help out with my appetite because I can’t eat a damn thing and also how long will it take for me to pass a drug test because I want to move on with my life and get a career any tips or suggestions would be much appreciated. Have a good day.