Just go ahead and set up auto-pay using your bank’s app; it'll save you a lot of trouble. Most big banks have free options for e-mandates or UPI auto-debits these days.
So, here's the thing: there's a 3-day grace period from the RBI, but the interest starts piling up immediately, so it's better not to delay. A cool tip is to set up WhatsApp reminders a few days before your payments are due. This way, you won’t have to stress about forgetting ever again.