You lived outside of mommy's home for 7 months, then moved back in for what? If she has a significant other, what was the reason for you to move back home?
The amount you are drinking is pretty high for your age, by the way.
Dude, do you want to stay stopped or what? What are you really seeking on this site? No MTV here, I have antenna tv. I went to AA at the age of 25, didn't think I was "one of them" in that meeting, and for 25 more years proceeded to "ruin" what life I did have (and it was a college educated, career losing one).
Do you want to think more clearly? Stay stopped from the drinking cycle you are in?
I have no real advice. I can offer my experience and how I really messed up, 'cause "I'm not one of them."
I hope you find sobriety. Lots of young people are able to recover from this, whatever it is, this "too much drinking and life's a party, party on, dude kind of life."
AA, AVRT, SMART, Rational Recovery, LifeRing, SOS (and also Women for Sobriety) are available options to help you recover.
I wish you well!