Low tolerance or dosed

Not sure where to ask this, but this sub seems like a possible place…

Last night I got totally plastered on half a cocktail and intoxicated feeling lasted 90 minutes after stopping drinking. Drink was your standard Long Tall Sally, lots of ice in typical sized glass.

I got Covid bad over New years and have only had one drink total since then. Can being ill or taking a few weeks off drinking effect tolerance that much???

For reference, I usually have one gin martini a week max and that only makes me feel buzzed. Not fully intoxicated like I felt yesterday.