Thinking about going back to treatment.

I went to treatment this yr for 28 days in April. Was cleaned for 3 months. Then I started drinking 1 month after I finished treatment. Basically I would buy a small bottle of vodka (375ml) sometimes a tall can with it. Anyways I would do that every couple days since June- Aug. but I’m going back to school (uni) for the first time and I’m doing it almost ever night now. I drink alone in my room, and watch videos, sometimes I tell myself okay don’t drink on the week days but on the weekend. But I don’t listen and I’ll probably go 2 days without drinking a 375 ml of vodka. But yeah it’s starting to become a bad habit. I feel good at night when I have it. It’s just enough to make me feel good& not black out, then the next morning I feel like shit going to classes 10-30 min late and being hungover. Their was a period where I had no money and I didn’t drink for 2 weeks in September and I felt happy. But now I keep drinking every night and ill get the urge to go buy a small bottle because I know it will make me feel good. I’ve been doing good in everything except my math (Which I need). Anyways this habit is getting harder to control so im getting scared. My family is happy for the first time that I’m actually trying with school. But idk if I can do it with an addiction. Was wondering if I need more help.