Hi Aspirant,
R.D.Sharma can be considered to be enough for Mains.However,this can only be said if you clearly understand every concept.
For both mains and advanced,I would suggest you to solve the books of Arihant,Cengage,S.L.Loney etc.
They are very good books and if you can solve them,you can also solve the JEE ADVANCED questions.
Also,solve previous years question papers and mock papers as well.
Hope this helps.

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