hello vikas......

to crack jee mains within short time you follow the above instructions

first make a plan so that you can get little bit analysis on the subject you are having and according to that make a timetable and give the less time for easy topic you feel and little more time for the harder topic you feel most importantly manage your time

try to solve mock tests and also try to solve minimum 150-200 mcqs daily

i hope this information is helpful

all the best.