It has never molted since I got it. I got it in November 19th, it is about the size of your pinky nail. It built a tunnel and climbed in it like a week to two weeks ago and I have not yet seen him out of it. I see him in it moving around sometimes, that is about it. I thought it may be getting ready to molt, so I haven't fed it for a week.If it has sealed its tunnel, don't put any food in there,
How big is the sling, and when was its last molt? It sounds like its preparing to molt.