Candidates can prioritize their study topics for UPSC by conducting a thorough syllabus review, categorizing topics based on their importance and personal strengths. Creating a study schedule that allocates time for each subject in accordance with its weightage can be advantageous. Regularly updating priorities based on mock test performance and current affairs is crucial in staying relevant. Additionally, aspirants should focus on understanding interconnections between subjects, which can help streamline study efforts and reduce redundancy, ultimately leading to a more effective preparation strategy.