play the waiting game. If a snake doesn't eat, reduce stress via handling and ensure optimum cage environment. Wait a week making sure your snake is cozy and well maintained, and try again. Sometimes balls have personal kinks (ha) regarding feeding. Some like having a f/t rodent wiggled, some like having it left in the tank and unobserved because it's a shy eater. One of the great pleasures of owning a ball python is learning exactly what kind of brat (said with all kinds of love) you have on your hands.

Oh, and most of all, don't panic. You don't put your snake on a feeding schedule, it puts you on hunger notice.