Hi dear,

If you have a good basic then you may go for these books 

For physics

1.previous years paper of main and advance

2.40 days jee main by arihant publication.

For chemistry

1.NCERT 

2.previous year paper of main and advance 

For mathematics

1.coordinate geometry by SL LONEY 

2.CALCULUS by Amit M AGGARWAL

3.Previous year paper of main and advance

You have not sufficient time so you can go for 40 days jee main for chemistry and mathematics but avoid much books and revise properly.

Hope it helps

Hello, dear 

Well , now it's time gear up start sovling ques., 

Basically I would recommend to buy previous year book of IIT and solve from that , that will revise your each concept and as well you will definitely come to know your weak topic.so ,you should take help of YouTube if you go in detail to read from books ,for one topic you will loose many because it takes time. And be self motivated if you are not able to solve previous year question doesn't mean you don't know that it may be happen that doesn't clicked in your mind,concept of that question.So, you can see solution as well but make sure if you get any other question of that topic next time you will be able to solve that .and definetly in previous year question you will get many.keep ,calm ,be motivated.

All the best!!