Yeah for you and Duncan, Jenifer!
You are doing the right thing and doing it well, it sounds like.
Be sure to keep us posted.

I know what you mean about your dog doing something that THEY decide is what they want.....when you're tyring to correct a problem:
My dog, Scout, likes to bark alot in the car. I started carrying a water-spray bottle around with me, and give a good squirt when she acts-up. What she started doing is making a whole lot of noise WITHOUT actually opening her mouth or barking.
It's amazing the noise she can make that way! I think she is thinking "well, I'm not barking!"

Congrats to you & Duncan.