Hello Vidhan,

Don't worry dear, think positively, you still have one year time for JEE Mains.

Try to study for around 5 to 7 hours a day. Prepare a proper strategy and time table according to your convenience and follow it.

Preparation Tips for JEE Mains:

First make a note of JEE Mains syllabus and get idea of it.

Prepare your own short notes.

Make flow chart of the concepts to remember them easily.

First prepare the topics you feel easy, to boost up your confidence.

After than go for tough subjects prepration.

After completion of the syllabus preparation then solve previous year's papers.

See the type of questions asked in previous years and prepare accordingly.

Then go for sample papers solving.

Then take sample or practice tests.

Finally revise all the syllabus.

Best Books for preparation of JEE exam are listed below.

Physics:

NCERT Physics Class XI & Class XII

Concepts of Physics by H.C. Verma

Chemistry:

NCERT Chemistry textbooks for Class XI and XII

ABC of Chemistry for Classes 11 and 12 by Modern

Organic Chemistry by OP Tandon

Physical Chemistry by OP Tandon

Mathematics:

Mathematics by Arihant Publications

Objective Mathematics by R.D Sharma

NCERT Mathematics Class XI and Class XII textbooks

To get more information go through below mentioned link.

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

You can check below mentioned link to get more information about JEE Knockout.

https://learn.careers360.com/knockout-jee-main-april/

May this information was helpful to you.

Best of Luck!!