Dear student,

Greetings.

NCERT books will help you a lot in your preparations to learn the basics as well as the fundamentals as it plays the main role in any examination for preparation. But apart from NCERT, You should also go for other guides such as:

First you should go for the examples solved and unsolved, then you go for the exercises, lastly you can solve the previous year sample papers for the complete preparation. Proper revision and practice will give you the positive results.

Wish you all the best, dont be worried give your best!

Dont worry much because its very much sufficient to score good marks in Jeemain.

Solve maximum mocks above 20 and scrutinize all mistakes and weak adeas and revise them amd solve all douvts from them. Try to use HC Verma book if any doubt is still persisting. 

Make short revision notes and study as per weightage of syllabus  

Follow time table and adhere to it to have sufficient time for relaxation .