Wow, I could have written this post about Fletcher! The only difference is, I am very lucky that Molly, my other dog pretty much ignores his theatrics. She's a broodie, and I think her attitude is "I raised over 30 puppies, you don't impress me, BOY" Fostering has complicated things, but I'm not going to stop that, so we'll just have to adjust.
It's early days, but handling the leashes, collars and Fletcher's harness without actually going for a walk seems to be helping.