How long with no alcohol to reset tolerance?

21M, I’ve started drinking a year ago, took me about 3-4 shots of 40% to get very drunk. I only drink to get fully drunk. I did that for a year about 3-5 times per month. Now I’m at the point where I can do 7-9 shots of same alcohol to get fully drunk. How long complete break from alcohol do I need to do for my tolerance to reset back to point where I’ll get fully drunk from 3-5 shots? At 9 days rn. Thanks for all answers