Hey there

As you have not mentioned about the exam you are preparing for then It'll be difficult for us to answer you as some exams have limited attempts and some don't.

But if you are a dropper then you must have some knowledge about the subject though you just need to clear some concepts and make more numericals. Whatever is taught in coaching please revise that on the same date or else it will become a habit and you won't complete the subject on time. Complete your coaching materials thoroughly and study daily these things if you follow will definitely lead you to success.

Good luck