A good friend of mine suffers from GAD and her college was able to work with her. Her Pdoc and T wrote a letter explaining her illness. The college then had her professors work with her and she was able to do 95% of her work online. It seems uni is very important to you so I hope they will work with you. I see you are in a different country so I don't know if this is an option for you.

You have my most heartfelt sympathies. Fingers crossed you can get in with a Pdoc and get this worked out