Will 5-6 drinks every weekend night increase my tolerance?

I try not to drink too much, as I know that it is obviously bad for you and over 15 a week is considered heavy drinking. My question is, is it necessary bad to smash a 6 pack every Saturday? My tolerance is pretty low and I would like to keep it that way. I am very conscious of my alcohol consumption and try to be healthy. I drink only 1-2 days a week, the second being something unexpected comes up like some party/hangout and the first being just a chillax weekend night and some video games. Don’t hit me with “if you have to ask bro…” because my monthly intake is probably about 15-20 drinks. I would just like to hear some advice from other drinkers, as it’s pretty impossible to find any actual advice on the internet. I usually drink about 5-6 drinks in 2 hours.