(1) First you regular study your NCERT book, because this is the best book for entrance exams
>Give regular test series of jee
>keep regular self study of NCERT & other referral books
(2) Here i prefer some books for jee
>Physics( erodov, ncert,G.C agarawal)
>Chemistry(ncert, OP Tondon)
>Mathematics(kc sinha , ncert)
best of luck for your exams......