For effective revision leading up to the UPSC exam, candidates should prioritize key topics based on their strengths and weaknesses. Utilizing a revision timetable can assist in balancing subjects, ensuring thorough coverage. Practice with past examination papers aids in identifying patterns and refining exam techniques. Short, frequent revision sessions, ideally with active recall strategies, help reinforce memory retention. Additionally, discussing concepts with peers and participating in mock tests simulate exam conditions, fostering familiarity and confidence. Ultimately, systematic revision maximizes the retention of crucial information up to the exam day.