My GF depression is making me go down.

For context, i (22F) and my gf (21F) have been together for around 9 months, and we love each other and want to spend the rest of our lives together. The thing is, a few months ago, my she got into a depression caused by the risk of being expelled of school. She is at a very low point and into a big depression where she bassically turned off as a human, not wanting to eat, do anything, and only likes to be in bed without doing anything. I really empathize with her, and i support her in everything, but the thing is, she is draining me. I'm studying something too, and i'm drowned in assignments and exams, and i can't prepare for anything when anytime i study, she is demanding attention, and telling me hoy she feels. Ik the last thing a said might sound like i'm an asshole, but i listen to her all day, and she has my attention mosto of the time, but i need time for myself too, and idk what to do. I try to find solutions for her, but she usually says no to them, and i'm feeling super overwhelmed by the situation.