Hi, this is my first post and I am no expert at dog behavioural problems ..... another couple of sugestions is one of those puppy toys with the heart beat in it to help comfort the dog, have music on around the home (preferably soft music, but you never the dog might be a real rocker ..... also try finding someone who does herbal medicines to help calm the dog down.
I have a very hyper active shepherd pup and I add drops to her water to help calm her down.
Hope this may help
cheers