I had my lawyer with me which I couldn't have done it without but I have extreme anxiety and social anxiety. I think what helped tremendously is that we had my pdoc on speaker phone to talk to the judge. Just really express the problems you have and that you just can't work. I don't know what your symptoms are that keep you from working but really get that across. If you can't get your pdoc or t to make time to talk at that specific time bring a detailed letter from one or both on why they believe you can't work.
Wishing you luck!