Hi,

NCERT is considered to be a treasure by every JEE aspirant. There have been instances in the past years that questions in JEE Mains were directly quoted from a chapter of the NCERT book (physics/chemistry).

So, you have to study it religiously, that means devote 2-3 hours daily to read the books chapter-wise, and read every line. If you make it a habit to sit and read the books daily, eventually you will see that you have completed your syllabus smoothly.

Coming to your question, there is hardly any shortcut to success. Regularity is the key.

Check out the chapter wise weightage of Phy/Chem/Maths for JEE preparation - https://engineering.careers360.com/articles/jee-main-syllabus-weightage