Hello aspirant
Hope you are doing well
Be confident and strong So u need to prepare a revision timetable which will allow u to study all the 3 subjects in a planned manner.First study your strong topics so that you maximize your score from those. Solve problems from the selected books as well as your coaching class book which u may not have solved earlier. You can get the sample papers for jee advanced from the link given below
https://engineering.careers360.com/download/jee-advanced-sample-papers-previous-years

First you can study your strong topics so that you can maximize your score from those chapters solve problems from the books which you have not solved earlier . Spend more time on maths since it requires more of problems solving than any theory.
Below is the link for the important topics tricks and books for jee advanced
https://engineering.careers360.com/articles/jee-advanced-2021
Good luck
Hope it helps

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