I have a male suriname that is about 5 years old and he hasen't eaten in about 2.5 months. I moved from Northern Ca to Southern Ca right at about the time that he stopped eating. I fed him just before I move and then when I tried after I moved, he refused. He is still active when I get him out. His personality hasn't changed. He has lost some weight, but not that much. Any suggestions on getting him to eat?