For JEE Mains Session 2 preparation, begin by reviewing errors from the first attempt. Focus on weak areas by revisiting essential concepts, formulas, and problem-solving techniques. Practice previous years' questions and take mock tests to boost accuracy and speed. Strengthen fundamentals with NCERT and use supplementary books for in-depth understanding. Follow a structured study schedule, stay consistent, and regularly solve problems. Keep a positive mindset and work towards continuous improvement.