Approaching interdisciplinary studies for UPSC preparation involves integrating knowledge from various subjects, facilitating a holistic understanding of complex issues. Candidates should identify overlapping themes between disciplines like politics, economics, and geography. This can be achieved through thematic study, where concepts across subjects are interlinked, promoting critical analysis. Using case studies to illustrate interrelations enhances practical understanding. Regularly reviewing interdisciplinary materials, such as reports from think tanks, further deepens knowledge, preparing aspirants for the diverse nature of questions in the UPSC exam.