I need help!!

I’m really struggling guys. It’s been over a week now and I’m just starting to sleep most of the night again. The lack of sleep was really getting to me and making me question my decision getting him. I don’t have many of those thoughts anymore. Kinda just looking for reassurance and any tips. Training is hard because he is not food or treat motivated. Nor toy motivated. Also how to stop him for eating his own shit!?!?