I've been in a similar situation where I ended up having to drop 3 out of 4 classes for the spring semester this year. I was devastated about that on top of all the depression and anxiety I was experiencing for other reasons. My financial aid got screwed up since I didn't maintain the minimum number of credit hours for spring. I spoke to people in the Students With Disabilities office, financial aid office, and academic advising. I told them I was having serious problems and asked them what were my options. All three departments worked with me to get things squared away as best as possible given the circumstances. It wasn't perfect, but it was good enough.

If you need a starting point, go to your academic advisor. They've encountered this situation a million times before and can help you get things sorted out. Or you can go to the counseling center if your school has one. See about getting special accommodations for your depression. You will probably need to get a letter from a counselor stating that you have depression, are being treated for it (even if it is only just now that you're being treated), and that you need longer to finish assignments and take tests. Figure out what courses you can take this semester. Find out what impact the last semester has on your financial aid. Consider taking the only one or two easy classes this semester. Or you could take the semester off as someone else suggested. I urge you to get a therapist and get evaluated by a psychiatrist to see if medications would be an appropriate for you.

You have a lot to do but it is doable. I think it's possible to get all this done in the next two weeks. I assume that your classes start on August 25th?

PS: I was doing so well until the bottom fell out of my life last November. I'm back on track now though not on my original timetable. Oh well. I just want to give you hope that things can get better. It doesn't happen quickly, but it does happen.