It's probably the hookworms and coccidia but could be one other problem. My girlfriend just bought a new beardie and it was not eating for the first few days. I figured it was just acclimating at first but after a while I started to get worried. He looked fat and healthy but did not move around that much. I gave him a little stomach exam and felt something a bit hard in his stomach. So I gave him a bath and rubbed his belly and, after about 30 minutes out came a poop that was almost as big as him. He had a bit of a sand impaction. Is he going to the bathroom? If he's not eating but has not lost weight for that long it could be an impaction.