What cute, obedient canines who are very judicious in their behavior classes heh heh. Educating is not easy, I try to do a good job with my dog, but she is crazy and I am not good at educating he he he. Admirable your work and dedication with your beautiful dogs.
I think you should try going to group classes with your dog. Dogs are like children, they repeat one after another, and this makes it easier for them to learn.