Hello student ,

Here I will suggest you that as you are in class 11th so first of all go through your ncert books deeply and try to prepare your own notes by making a summary of chapters in point wise and if you get time then do solve prebious year question paper and further do prepare for your 12th also as your percentage matters a lot to give any entrance exam , don't buy any guide book now and for now study with your own study materials only . As this year syllabus has changed so there will be reduction in the syllabus of jee also but we could not say anything for year 2022 so you be prepare from your side and wait for the guidelines of education minister .

Hope it helps !