Hey,

There are many good books which you can refer to in order to master your maths syllabus for your JEE exam.

Few of the books are,

RD SHARMA

SL Loney

Arihant Publication,

You can also go for some good coaching material books like Career360 preparation package for Jee Mains

You can avail the facility of online classes in order to ace the exam from Career360.

Below is the link for test series and online classes.

Link : https://learn.careers360.com/knockoutfull-jee-main-april/

Aprt from that, b elow is the link which  contains detailed information regarding preferred books for all three subjects.

https://engineering.careers360.com/articles/best-books-for-jee-main

Hope that helps.

Thank you.