Our blood python has always eaten regularly for the past year. He always starts searching the cage a day or so before feeding time as an indicator that he is hungry, otherwise he stays put under his hide. The past 2 months, she shows NO interest in eating and is searching her cage constantly! We try feeding her weekly and she only tries to get away from her food, but she is very active and healthy. How long will this last? Thank you in advance for any advice.