Strategies for managing multiple subjects in UPSC preparation include creating a detailed timetable that allocates time effectively across subjects while incorporating regular breaks. Utilizing active learning techniques, such as summarization and teaching back, can reinforce understanding and retention. Prioritizing challenging subjects and addressing weaker areas consistently is vital. Integrating relevant current affairs as case examples in diverse subjects fosters connections between topics. Lastly, periodic self-assessment through mock tests can help in tracking progress and adjusting study plans accordingly, ultimately ensuring comprehensive coverage of the vast UPSC syllabus.