Dear Aspirant,

On last 3 days on your exam you just need to believe in yourself at first. The you need to go through the most important concepts and revise all the formulae. If you have solved previous years papers you must know which kind of questions are repeated with slight changes. Revise such questions without fail. Also you must keep your mind calm at this point. Don't try to read everything,just believe in whatever you have studied till now. Don't skip your sleep and meals.Also do make a note of important topics and then revise them. Don't waste the time which is left just use to do something productive. Also there are many last minute revision videos available on online platforms like  YouTube which will help you. Also think over your time management for mcqs.Don't worry and do your best.