[HarleyHOO]

Try a heartbeat pillow...you can get one from Petsmart. It's a little pillow in the shape of a bone which has a voice box inside. It's very sensitive so your pup will probably be able to make it work by himself. It literally sounds like a heartbeat from the mama's womb. It was made for anxiety in dogs...
I only had this issue for about 3 days before I heard about the pillow. Once I got it, I put it in Harley's crate with her and she would lay on it. Once you push it, it'll run for about 10 minutes I think. It was great at night time too, because anytime she would move around or turn, she'd step on it and it would start beating and she'd go right back to sleep. Good luck!!