There are variety of study material for preparation of JEE main.

The best strategy is to stick to the one study material and not search other because if you randomly change your study material then you will cover only one topic and not all others.

you can prepare by starting with the previous years question and then appearing for mock test.

You can refer to the following books

For chemistry NCERT are the best books and you should not take it from it all three sub sections that is an organic chemistry organic chemistry and physical chemistry can be covered from the NCERT itself.

For mathematics you can use Arihant books but don't go for repeated questions only mark the questions which are up to the level of JEE main and then solve any questions

For physics JEE mains or JEE advanced HC Verma is one of the best book for the preparation