You said it is warmer out? Is it warmer inside as well. Often he may be reluctant to feed because of temps and now it is warmer.
I see that you are in Ontario so this looks like it may be a big factor. Some corns will take themselves off of food during the winter months regardless of temps inside. (internal clock?)
somehow they just know. It is the same with breeding. Few are able to trick their snakes to breed at different cycles than the natural one that coincides with the seasons.
Everything sounds normal to me. Good luck. Post a pic if you get the chance