I've not read all the comments here, so apologies if I've got the wrong end of the stick, OP.
Could it help you to see more options than turn up and do the exams with stress, or avoid them? For example, could you just make the best of the time you have left in which to revise, then sit the exams without expecting to pass but to prove to yourself that you overcame a challenging obstacle? Could you see it as a learning experience rather than a necessity to pass anything?
What are the different ways you could support yourself as you do the exams?
Best of luck.