I looked it up and multiple reliable sources confirmed my initial thought that after a period of sobriety does decrease your tolerance. Not to the point it was before the first time you drank, and the "baseline tolerance" when you're not drinking for a while does increase each time you significantly relapse. I must've really increase my baseline tolerance since that major relapse I had last summer.

Also, when you have the motivation of addiction, no self-respect, and a vagina, anything is possible.