Candidates preparing for UPSC often balance multiple subjects by employing a strategic study plan that allocates specific time slots for each subject. They utilize interleaved learning, which involves mixing different subjects during study sessions, helping to reinforce knowledge and enhance retention. Additionally, they frequently review previous years' question papers to understand the weightage and pattern of questions in different subjects. Regular self-assessment through mock tests further helps in identifying weak areas and adjusting their focus accordingly, ensuring a well-rounded preparation approach.