Not at all. Take care of your time. You have enough time now. Review well, do more questions from previous years and do them again and again. Do a few sets and you will find the routine, which is basically a concentrated question type. Enrolling in class is just a psychological effect. I feel that I have signed up for a class, but I am very at ease. However, applying for classes will disturb my time, and remedial classes usually start after 10, which is not very good in terms of time. So believe in yourself. I wish you immediate success!