Hey,

Although it depends on your interest and previous knowledge of the subject. still, I am sharing a list of chapters you may leave considering the time you have now. But make sure that you go through previous year questions and selectively skip topics based on your preparation level.

Make sure you revise the chapters you have already covered (you can't afford to lose marks here)

Chemistry
• Isomerism of Organic Compounds
• Hydrocarbons
• Surface Chemistry
• Solutions
• Periodic Table
• Biomolecules
• IUPAC Nomenclature
• Polymers

Physics-
• Heat Transfer
• Sound Wave
• Fluid Mechanics
• Gravitation
• Circular Motion
• Alternating Current
• Thermo Electricity
• Communication Systems
• Calorimetry
• Environmental Chemistry

Mathematics-
• Straight Lines and Pair of Straight Lines
• Fundamentals of Mathematics
• Inverse Trigonometric Functions
• Matrices and Determinants – Weightage
• Binomial Theorem
• Solution of Triangle
• Statistics

Al the best!