Candidates should prioritize their study topics for the UPSC exam by focusing on the syllabus structure and weightage of subjects. Starting with static topics, such as history, polity, and geography, lays a strong foundation. Understanding current affairs and integrating them with static content helps create a holistic grasp of subjects. Assigning more time to areas of weakness can enhance overall preparedness. Regular revision, practicing previous year questions, and participating in mock tests ensure effective review and memory retention. Prioritizing based on difficulty, scoring potential, and interest levels will make preparation more efficient.