Need advice regarding english

I am a dropper. After mains 2 (if you're curious 97%ile), I realised I can't reach adv seeing my adv mocks numbers. I Didn't gave Bitsat S1.

I completed all the non mains chapter today and from tomorrow, I will start giving mocks. I don't know shi about english in bitsat and what to do. Any guidance on how to approach english? Do I have to study books or something?

I don't know if it matters but 98 in english in boards (cbse).

Thank you for your help!