Here are few important tips you can follow for exam preparation.

• Solve at least 40-80 numerical problems daily, Including physics, chemistry and, mathematics.
• Set time limits for questions, Practice to improve speed on problem-solving.
• Start with the difficult areas first, Keep notes on the hardest sections and work your way to the easier material.
• Prioritize by topic, Develop your strategy to prioritize your subjects in accordance to your requirements
• Analyze your mistakes, Find the points that you often face difficulty with and which slow you down.
• Practice logical thinking, Build your solutions step-by-step with contextual thinking. Discard stray thoughts.
• Use your board exam syllabus, Material from the board exams will be included on both JEE Main and JEE Advanced.
• Consult test papers from previous years, Obtain copies of test papers from the past 10-15 years and solve the questions.

Good Luck!

If you want to crack JEE exam you should be determined and self motivated. You should work smart to acheive your goals.