Hello Vijay,

Seeing the amount of time left for JEE april attempt, you should not waste your time in reading long paragraphs from books, rather you should have a targated study. I would suggest you to go through prevoius year ppaers and try to solve it in the stipulated time. Find your mistakes and reattempt it, untill you get full marks. try to learn the weaker topics and prepare those topics after you finish attempting the paper. revise old topics, don't invest time in new topics, unless you hav'nt prepared anything. try to study from NCERT and other legit books. Solving as many questions as possible. Try preparing a checklist of all the topics.

kindly refer to the below mentioned article for more preparation tips:

https://engineering.careers360.com/articles/jee-main-preparation-tips

hope this Helps