I have had my Tarantula for about 3 months. It is a about a curly hair that is about two or three inches front to back. This past week he has dug a small hole just big enough for his body and has stayed in it and has not eaten. I know not eating is a sign of pre-molt, but it barely reacts when nudged on the leg with a paint brush and I'm worried something else is wrong. How do I tell if it is for sure pre-molt and if it's not what should I do? Any help would be greatly apreciated.