How do I handle a huge amount of exams?

I am a medical student and over the easter holidays I will have to undertake a huge amount of essments and written exams, and i don't know how to deal with it. The study period is 6 weeks with 3 weeks after worth of exams, and it gets me so anxious. I had to do something like that last year for my 1st year and it was hell, and now i have even more to do. I heard last year about people doing 10 hours a day of study every day for the whole period and it make me feel bad i can only do about 6 or 7 and i need some days of relaxation. I already have anxiety and depression, and i feel as though i wont be able to handle the period of study again. Does anyone have any advice or experience on how to handle such a chaotic time? I know this may seem petty, but im already worrying about easter and wether i can handle it as i have exams in chirstmas and i have started to get anxious all the time while studying for these exams, and i feel like my life is so dull and there is no point to anything.