Hello Nikita,

There are several important topics that are must to be prepared, they are mentioned below:

For Physics:

Electrostatics, Modern Physics, Optics, Gravitation, Units, Dimensions, Kinematics, Work, Energy and Power.

For Mathematics:

Coordinate Geometry, Complex Number, Mathematical Reasoning, Mathematical Induction, Probability, Statistics, Vector  Algebra.

I suggest you to go through all the topics, and have a rough idea. Adopt a backwards strategy, start preparing by solving papers and identifying weak points.

Hope this Helps

Full JEE main syllabus is on below link for your reference:

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

hi,

see it would be better not to learn any new things as time are really short.

you may forget the old lessons if you trying to grasp any new theory. just revise every thing you have learnt till now. make a short notes and work on your weak areas.

best of luck for exam.