how should we prepare in this crucial period

Dear student, Yes, you are 100% correct that this is a crucial time. So be calm in this period and do not think that your preparation is not good or average. there is a high chance of negative thought in this time period. So just study your old notes of your class and your coaching notes. Do not try any new book at this time. Try to remember all the formulas so that at time of exam there will not be any confusion about that formulas. Do not try to compare your preparation level with yours friend at this time. So just study with your old notes and feel some good confidence. Best of luck Pramod