If you want to score this much with the last 30-35 days of preparation, then do consider reading the following topics:

Physics :

• Modern Physics:- 20 marks
• Heat and Thermodynamics :- 12 marks
• Optics:- 12 marks
• Current Electricity :- 12 marks
• Electrostatics :- 12 marks
• Magnetics :- 8 marks
• Unit, Dimension and Vector:- 4 marks

Chemistry :

• Transition Elements and Coordination Chemistry :- 12 marks
• Periodic table and Representative Elements :- 12 marks
• Thermodynamics And Gaseous State:- 8 marks
• Atomic Structure:- 8 marks
• Chemical Bonding:- 8 marks
• Chemical And Ionic Equilibrium:- 8 marks
• Solid State And Surface Chemistry :- 8 marks
• Nuclear Chemistry And Environment:- 8 marks

Maths :

• Coordinate Geometry :- 20 marks
• Limits, Continuity and Differentiability :- 12 marks
• Integral Calculus :- 12 marks
• Complex numbers and Quadratic Equation :- 8 marks
• Matrices and Determinants :- 8 marks
• Statistics and Probability :- 8 marks
• Vector Algebra :- 8 marks

So if you can complete this high weightage topics atleast 70% of it, you can do your targeted marks.

For more information regarding JEE MAINS chapterwise weightage consider the link below:

https://engineering.careers360.com/articles/jee-main-syllabus-weightage

I hope this helps. Goodnight!