The best books for maths JEE ADVANCED-

1. Maths XI & XII by R.D. Sharma
2. Objective Mathematics for JEE Main & Advanced and Other Engineering Entrance Examinations by R.D. Sharma
3. Trigonometry & Geometry: – Plane Trigonometry Part 1 by S.L. Loney
4. Co-ordinate Geometry: – Plane Co-ordinate Geometry by S.L. Loney
5. Algebra: – Higher Algebra by Hall and Knight
6. Calculus: – Problems in Calculus of One Variable by I.A. Maron
7. Differential Calculus by A. Das Gupta.

Course in Mathematics for IIT-JEE by Tata McGraw-Hill publications. [practice].

Also you can practise sample papers from knockout package provided  by Careers 360.

https://engineering.careers360.com/articles/jee-advanced-mock-test

Hope you understand this very Well and All the Best..