Hello Rohan,

Referring to only a single book for JEE Main or JEE Advanced for Mathematics is not sufficients. Apart from RD Sharma, you must refer to others books which specializes in a particular section/topic of syllabus.

You can consider following books for preparation:

• Higher Algebra by Hall and Knight
• Coordinate Geometry by S.L. Loney
• Differential and Integral Calculus by N. Piskunov
• Calculus and Analytic Geometry by Thomas and Finney
• IIT Mathematics for JEE Main & Advanced by M.L. Khanna
• Course in Mathematics for IIT-JEE by Tata McGraw Hill publication
• Problems Plus in IIT Mathematics by A Das Gupta
• Trigonometry by S L Loney

All the best!