Candidates should approach interdisciplinary studies during UPSC preparation by integrating knowledge across subjects like polity, economics, and environmental sciences. This approach encourages a holistic understanding of issues, which is crucial in civil services roles. Exposure to different disciplines fosters critical thinking and analytical skills, allowing candidates to tackle the multifaceted nature of societal challenges. Moreover, interdisciplinary studies can reveal underlying connections between subjects, enriching responses and aiding in effective problem-solving during the examination.