Poor Nebo. Did Nebo eat today? If so, did he eat on his own, or was he enticed in any way? Whenever anyone's kid has tummy problems, I always think of pancreatitis. Does he seem unhappy and/or distressed? Any signs of pain? I know you've had it before, so you know about it, but it always comes to mind with vomiting and diarrhea in an otherwise healthy young dog.

Chester will go along eating and pooping fine and then suddenly it all goes bad and he's having diarrhea and in pain and won't eat.

Just a thought.

Hope he feels better soon and if he doesn’t want to eat, don’t dress his food up. Like the vet told me, they know when it’s not a good time for them to eat. I know you know it can be dangerous to take in any food if he does have pancreatitis.