When i posted the same question on this site, i was told if it's a healthy snake it should it at any point in the day on feeding day. I always feed my snake around 3pm, not because i'm on a strict schedule just it's always been 3pm when i realize oh it's feeding day lol. Most corns i have seen will eat or start to eat on a mouse within 5 minutes. Mine always eats under 5, but the last 2 times it's been under 30 seconds. Hope this helped.