Sounds like its going good. If you have any more problems though, be sure to tell us. I don't agree with the bahaviorist of making it go on his back. It may work, but I think the dog should have the chance to run. They have their three options, flee, freeze, or fight. They should be able to have all 3 options available. Not sure if this is making any sense. Just saying sometimes I don't agree with behaviourists.