Hello aspirant, now only little time is left before the JEE Mains exams. In order to prepare for it in best possible way, try to revise those topics first which you are your strong points. Solve a lot of previous year questions and learn the concept of those questions which you failed to answer correctly. Do not try to learn new chapters which you have never studied till now . Practice the questions of JEE mains of this year in session 1,2 and 3.

Make small goals to revise topics of all 3 subjects every day. Make a strict time table with balance between studying and rest. Give mock tests to find which concepts are not clear to you. Make proper planning of which chapter you will revise on which date and make small revision notes. Focus on NCERT books specially for Chemistry as direct questions come from it in JEE exam.

Get free mock test for JEE mains 2021 here - JEE Main 2021 Free Mock Test (careers360.com)

Finally patience, hardwork and self confidence can help you to crack JEE mains with a good score.

Best of luck!!