I've had a similar experience. I was on a low carb diet for over 6 months and then was in a situation where I would drink socially which hadn't been a while because of covid and was just like... When was the last time I drank? I couldn't figure it out. I wonder if it has more to do with how it feels to drink without glycogen stores, to me even a comparably small amount will hit me hard and I'll feel shitty the next day.