I've had this GBB sling for going on 6 months and it has molted once in my care already, but for the past roughly 2 months its been acting like its in premolt. Its refusing food, a little lethargic, dark exoskeleton, bald spot on the bumb, etc. Right now its abdomen isn't fat fat, but its not small or shriveled. I've been making sure it has plenty of water in its water dish and have even tried lightly spritzing its webbing to see if that will help. Is it unheard of for a GBB to be in premolt this long?