Chakraboi good luck on that btw, dont stress yourself before the exams, especially the time before, js relax and try to moderate your study rate, ik this sounds misleading, but dont try to 'over-study' in certain periods, such as cramming
i recommend making a plan and study for a set amount on a set time each day until the test, do tests and time yourself under mock tests if you have access to any, this can pressure yourself (although this does contradict my previous statement) and allow yourself to adapt to the test environment
wish you all the best on the testโ๏ธ