Alcohol Intolerance –> Tips on how to manage it

Hey everyone, I am turning 21 in a couple of days and I really want to drink because I rarely do. I think I have alcohol intolerance, though I am not completely sure. A little bit about me: I have PCOS and have only been drunk a maximum of 10 times. After I get drunk, I throw up for hours (until I have nothing else to throw up, then I just start dry heaving basically). This happens usually hours into me being drunk (roughly 4ish hours). It only really happens when I get drunk, not when I am tipsy. I also don’t get the typical “asian flush” that I’ve heard other alcohol intolerant people get. I have tried being crossed (smoking weed) and also just simply drinking (not as much, however). I find that sugary drinks make it worse for me, which would make sense because I have blood sugar issues. Still, I am pretty sure it is a “my enzymes won’t break alcohol down” issue.

I was hoping for some advice on how to manage the affects (mostly the throwing up). Even if I can’t fully avoid it, I would like to know things that have worked for other people.