I dunno, dude. I have a 3.4 in my first semester. I smoke 3-5 times a day, and I try not to buy with other people. I suggest cut back on the frequency, plan it around your classwork, and buy for yourself. Don't even smoke it around your friend.

I don't want to sound like a douche, but I wouldn't have your friend over so much, and hit the books. It sucks to have to do that, but it pays off when final grades roll around.

Good luck bro. I'll vape a bowl for you..