I’m going to lose everything if I don’t get better

No one deserves this, depression or any of it. Any more than people deserve heart disease, or cancer. The only hope for sanity is remembering that. You couldn’t make yourself get better any faster, because no one would choose to spend more time like this.

Now, you need a plan of attack, strategies to deal with the real challenges in your life. Given where you are, you need time and understanding. I don’t know about your university, but mine had an office for accomodation, a place to go when you are struggling for health reasons, whatever they are. The people in that office could talk to your professors, or your dean, whomever they needed to to advocate for you.

and by the way, dropping for the semester and living is the better option. The date shouldn’t have passed yet, where you can drop without it showing up on your GPA. I did that five times, and if I knew then what I know now about university maybe it could have been less.