Hello,

SinceJEE Mains is one of the toughest exams held,  it is important to make a preparation strategy and start according to it. For this you will need to know the syllabus and the weightage for each topics.

Based upon this you can figure out which are the important topics that carry more marks and which you find difficulty and accordingly you can spend more time on those topics

Below I have shared with you a careers360 link from hwere you will get the JEE MAIN 2021 weightage for Physics, Chemistry and Mathematics:

https://engineering.careers360.com/articles/jee-main-syllabus-weightage

Also do remember to practice previous year papers and mock tests.

I am sure with proper preparation and hardwork you will be able to do well in the exam and score reallly well

Good Luck