What if you held him while you were passing the house and talked to him and petted him and put him down after you were safely out of range? Just a thought or maybe if you talked to your vet's office. One of the persons working in the clinic might be able to offer some help if not the vet himself. Hope you get a good answer to this problem for your puppy's sake.
__________________  Gone but never forgotten,my Joey. 06/24/2018
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