If you want to do any good in IIT JEE or any exam you need to limit your study material but do that material 100%.

For Maths:-

First, clear concepts than go through each and every solved example, in starting you will feel that you can solve these questions easily and tend to skip that question, but for clearing concept you should solve all that questions irrespective of time taken.

Some books in my point of view-

Problems in Calculus by Sameer Bansal.

Coordinate geometry and Trigonometry by SL Loney.

Algebra by Cengage publication.

For Chemistry:-

For chemistry, NCERT book is a must.

First Clear all your basic concepts from NCERT, after that for organic and inorganic follow Morrison and Boyd and JD Lee respectively but read only those topics which are mentioned in NCERT.

Books For problem-solving

Physical chemistry- N Avasthi,

Organic chemistry- M S Chauhan,

For physics:-

Clear concept deeply, try to learn behind the scene of all concept.

Try to Solve each and every question of HC Verma by your self.

Must attempt all previous year JEE questions.

All the very best and good luck.

HC Verma is mainly to clear your concepts it is written in simple language. So, that students can easily understand it. The books by H.C.Verma are perfect for any student aspiring to crack JEE to especially build a conceptual base. It is good book to start your preparation. It has also good set of MCQs for your practice.

This book is only to clear your base. So, it is not enough for your preparation. If you have to score good marks you have to recommended other books as well for your practice

Below are some recommended books for your preparation

Problems in General Physics- I.E. Irodov

Problems in Physics- S.S. Krotov

IIT JEE Physics- DC Pandey

Physics for IIT-JEE- Resnick, Halliday, Walker

Good Luck!!