Hey, it seems you are having your JEE exams after a certain period of time.

First of all, get clear it's not about a particular book pattern, video.

Check the steps below -

1. Be clear with your syllabus (Know it thoroughly)

2. Go through exam pattern

3. Make a plan or strategy for yourself.

4. Find out books that suits best to syllabus.

5. Give mock tests.

6. Do solve (medium and high level questions also)

8. Have perfect focus during exam and not worrying for not knowing any of answer.

9. Do not attempt any question you are not familiar with. There is 1/4 th of negative marking.

10. Be confident about your preparation. Use notes, random videos, books of good publishers and sample papers.

If you will be doing these things, it's a handy game to score good rank in jee mains even can get rank 1.

Good luck!