Candidates can employ methodologies like spaced repetition, active recall, and structured timelines for systematic revision before the UPSC exam. By utilizing tools such as flashcards and practice tests, aspirants can reinforce their learning effectively. It is also beneficial to categorize study materials based on subjects and prioritize areas that require extra attention. Regular self-assessment can help identify knowledge gaps, allowing candidates to adjust their focus accordingly. A well-planned revision schedule can significantly enhance retention and preparedness for the exam.