• PSA with 18-20 Multiple Option Correct Problems 
• PSB with 18 - 20 Short Subjective Questions
  
  (Total 3 hours time)

• High School Mathematics
• Calculus
• Linear Algebra
• Discrete Mathematics
• Probability Theory
• Mathematical Logic
• Programming Pseudocodes

Objective + Subjective Pattern

• Probability + Statistics (~7 = 5 + 2)
• Calculus (~6 = 2 + 4)
• Algebra (~5 = 1 + 4)
• Data Interpretation (~5 = 2 +3) 
• Linear Algebra (~4 = 4 + 0)
• Set Theory + Combinatorics (~4 = 3 + 1)
•  Number Theory (~3 = 0 + 3)
• Algorithms (~2 = 1 + 1)

• RD Sharma (Objective Mathematics)
• 10+2 Problem Solving Tomato
• Cengage (JEE Advanced Math Book)

• NPTEL SRS Iyengar (Combinatorics) Course
• Don't study graph theory
• Kenneth and Rossen (6th chapter)

Computer Programming

• (No need to know programming)
• Previous Year Question
• Let us C  chapter 4,5,9

Probability and Statistics 

• A first course in probability Chapters 1 - 5

Linear Algebra

• Schaums' Linear Algebra 

1. Start solving your past year's paper.
2. Make a Separate Copy.
3. Try to figure out what you can solve and what you cannot.
4. Take this feedback and try to work on your weak areas.
5. Take some guidance from some expert like seniors, teachers, etc ( Not Necessary )
6. Give Mock Tests.
7. Repeat.

All the best!