Aw, Thor is such a smart little guy, especially for learning all those tricks later in his life!
You're a good teacher.
I'm working on the same kind of things with Jackson. He's just gotten better with age with
the paying attention to me thing. I've never worked on "Watch Me" yet but I'd like to.
Generally when I say his name, he will pay attention. I try to not to repeat his name too
much for fear of over-using it. I usually just walk the opposite way he's walking, quickly
say "come" and keep walking and not even pay attention to him or try to get to him, and
he will follow me.
Sorry, I don't have much advice to give you though!