Dear Bharani
For good score in JEE you have to work smartly. Give more emphasis on quality rather than quantity i. e. do less problems but understand the concepts properly. Give time to revision. Revision is very important . I have seen students who just try to collect more and more problems fron here and there and waste the time and in the last they dont have time to revise. Do the course from maximum 2 sources.but make sure you manage time for revision also. Arihant books are sufficient for JEE. you can refer them.
All the best.
AKASH GOYAL
AskiitiansExpert-IITD
 
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