Candidates should revise their study materials regularly when preparing for the UPSC exam. A general recommendation is to undertake revision every 2-4 weeks to reinforce learning and retention. Establishing a revision schedule that encompasses both core subjects and current affairs is crucial for comprehensive preparation. Regular assessments can gauge understanding and highlight areas needing improvement. Active revising techniques, such as summarizing key concepts and practicing previous years’ papers, enhance memory recall. Consistent revision ensures candidates are well-prepared and up-to-date on essential topics, increasing their performance potential in the examination.