Alcohol tolerance not dropping

Had a beer today (6.7%) after four months of not drinking. I took a couple shots of vodka (30%) everyday for two months straight last year before stopping. Although I haven’t drank for this long, it seems like alcohol doesn’t do anything to me anymore. I can’t feel it, I’m not disinhibited, I’m not even relaxed from it, like I simply can’t feel anything.

I don’t know if this is the proper subreddit to ask this, but does anyone have any idea of why this is happening? I’ll be open to any ideas / theories, but I’m genuinely confused as to why.