@moukthik_Susarla Resonance study material is very good. I have solved it and had find many concepts, related questions being asked in JEE Mains, BITSAT and JEE Advanced.
You need to see your potential. Your main focus should be on questions of JEE. Also, develop abilities to solve JEE questions. You should try to Study your basic books first like NCERT, HCV, or board books.
Yes your coaching material is sufficient to crack your exam. But questions solving ability are more important.
Whichever coaching material you choose try to solve them completely.
Hope it helps!!!