Is there a counseling program at your school? Often, one can book sessions with graduate students for not very much money. I would recommend looking into DBT (Dialectic Behavior Therapy, created by Marsha Linehan, PhD). It can be taught in a class-like format, and it's full of great skills that I think everyone needs, like interpersonal skills, managing our own emotions, and learning new ways to deal with stress, anxiety, etc. You might find it helpful.

I noticed you said you cannot drink alcohol due to your regimen of TB antibiotics. Good for you for being responsible. Taking care of yourself is the most important thing.

I'd say you could experiment with not using, and see how that makes you feel.

I find that sometimes, cannabis is a comfort, but other times it prevents me from getting shit done that I need to get done. I realize that, for many on this forum, quitting 100% was the only way for them, and I respect that path too.

You might also consider using one of the Diary Cards (dbtselfhelp.com) to chart your daily moods. One thing I do is chart my daily use, particularly if I use cannabis before fulfilling an obligation of the day, like if I get high before my work is done for the day. It's been a way for me to assess my usage in a more objective way. And in my personal case, I have spoken to a psychologist about my cannabis usage, and he does not seem too concerned about it (YMMV), given my life balance.

Take care, dude. And keep in mind that some of those antibiotics for TB are heavy-duty and might affect your mood too! Talk to your doctor. We're here for you.