How to approach questions on federalism and centre-state relations for UPSC?

Analyze federalism by tracking the shift from confrontational to cooperative and competitive models.
Focus on the Seventh Schedule, the GST Council’s fiscal role, and friction points like Article 356 or the Governor’s office.
Use landmark judgments like S.R. Bommai and committee recommendations from the Sarkaria and Punchhi Commissions to propose balanced solutions for harmonizing Centre-State relations in your Mains answers.