I never brumated mine and they never went off of feed, but our house never fluctuated much. If anything it would get to warm, esp. that one time our AC broke down..
But it could be that this short cold snap triggered something in his body and that is why he is a bit reluctant to eat. I would continue feeding him, but not worry about him not being as excited about it. If the temps stay stable, he may get excited about food soon again.
He sure is a cutie, though![]()