Hello Candidate,

Don't be worry. With a great determination and honesty in your studies, you can achieve a good rank in both the JEE Mains and JEE Advance exam. Below I am mentioning stepwise strategy. So read it out.

Mostly students start preparing randomly, so never do that.

Make a proper plan, with a complete knowledge of syllabus.

Study only relevant things, don't go much deeper.

Basic thing is that, start from NCERT books. Study the theory completely.

Now, its time to switch some good books apart from NCERT. Below, I have mentioned some other good books.

Physics by IE Irodov, Organic by SKM, Inorganic by Vishal Joshi, Mathematics by SL Loney

Solve previous year papers for JEE Exams. You can also join test series of some coaching centre. This will helps you a lot in your preparation.

Hope it helps.