Hello Dear,

If you are eyeing to score 270+ in JEE Mains. Then First solve the previous Years’ Questions are they are of great value.

For Chemistry:  NCERT Chemistry, NCERT Exemplar complete Elementary Questions in Organic Chemistry by M S Chouahan , Advanced Problems in Organic Chemistry by M S Chouhan

For Physics: Mechanics (i.e. Chapters 3,4,5,6,7,8 of class 11 NCERT) and Electromagnetism (Chapters 1,2,3,4,5,6,7 of class 12 NCERT), use HC Verma and Irodov for Mechanics and NCERT and D C Pandey [ Solved Examples and First 20 questions from each chapter]

For Mathematics: Practice everything from a standard JEE Advanced book like C engage or Arihant, Maths takes the most amount of time but yields the greatest results

As there is very less time left so focus on the revision much:

Good Luck