I am using Google Cloud Platform (Free Tier) for testing my Application. I am using Cloud SQL and my DB size is 1 GB (Images). I am just testing the APP so the number of users is only 1. The max time I spent is less than 2 hours per day (120 minutes max). But when I observe the billing, it says that I spent around Rs. 4000 (Indian Rupees-4K) per month.
Details: DB standard Intel N1 1 VCPU running in Mumbai (with 30% promotional discount).
Can someone please help me reducing the billing amount?