I want to do iit what books should i stick to

Follow these book to qualify JEE-
Physics-NCERT and HC Verma
Chemistry-N.C.E.R.T.
- Solomons Fryhle (Organic Chemistry)
- J D Lee ( Inorganic Chemistry)
- Little bit of 'Modern Approach to Chemical Calculations' by RC Mukherjee. (Physical Chemistry)
Mathematics: -N.C.E.R.T.
-Little bit of 'Objective Mathematics' by R.D.Sharma
-Little bit of IITJEE Mathematics, Tata McGraw Hill Publication
Good luck.