Hi Naresh,

I would request you to reframe your question properly because after reading the question I cannot understand what your actual query is. As far as I have understood your question is "which book to follow in order to attempt JEE Mains 2020 exam?". I will attach a link below which will give you a list of books, syllabus and approximate dates of the JEE MAINS 2020.

LINK:- https://www.google.com/amp/s/engineering.aglasem.com/jee-main-2020/

Hope this helps and All the best. Please comment down below for any more queries.