Some effective methods for revising the UPSC syllabus include the use of structured study schedules to allocate specific time slots for different subjects. Candidates can employ active recall techniques, which involve summarizing topics in their own words and testing themselves on the concepts. Utilizing revision notes, mind maps, and flashcards can enhance retention and understanding. Regular practice through mock tests and previous years' papers helps assess knowledge and timing. Group discussions can further reinforce learning by facilitating exchange of perspectives and clarification of doubts.