Hi
Sorry your dog is having a rough time right now. From what you wrote it sounds like your dog has had to much trilo. Sometimes some dogs will begin to require less trilo, out of the blue. Please get the actual numbers and post them. Terms like right in the ball park and right where they need to be is very relatiive so the numbers mean more then the terms do. Did they offer any pred? sometimes pred will help with those issues and very quickly within a couple hrs. Maybe talk to your vet about it, it is what we give when our dogs get to low.
Please do get the actual numbers sometimes vets with only a bit of experience with cushings or trilo will make errors in interpreting the results.

Sharon