Physics is not only related to text-books. It is a vast mass of Intelligence and knowledge

So u also need to study many other good books + text books

For the purpose of clearing IIT JEE, CBSE textbook is enough for concepts, alongwith HC Verma and I. E. Irodov for problems

if u feel u are weak in physics then read halliday resnick try to understand by reading twice or thrice.and solve the exercise given there and then go for higher level books like HCV,D C PANDEY,IRIDOV

one more book for clear understanding of physics is by servey &jewett and also by feynman