Candidates can adopt several strategies for effective revision before the UPSC exam, including the Pomodoro technique for time management and spaced repetition for better retention. Creating concise notes and summarizing topics in bullet points can facilitate quick reviews. It is also beneficial to revise in groups as discussions can clarify doubts. Regular self-assessment through quizzes and mock tests is crucial to identify weaknesses. A well-structured timetable, allocating time for both revision and practice, can enhance overall preparation efficiency.