Tired of exam studying!

It has been since the 8th of May that I am studying for exams which I have every week since then! I am towards the end now (3 exams this week and my last one next week) and I feel that I don’t function well, not only on studying but also during the exam. In total, I sat 12 exams so you can imagine the stress I’ve been through and I am being through still. And I feel like I failed them all! I am so tired to continue but the remaining ones are the most important ones. I just can’t concentrate any more. My brain is dead. I don’t know what to do. I try to remain healthy, hydrated and productive but nothing works for my concentration. My mind is on summer. Can these days pass quicker? 😫