Oh I'm so sorry you're having such a bad time of things. I agree with Nancy, it was very brave of you to move him to a new vet...and the right thing to do. I would imagine I would have too after this long without any positive results.
I've been happy about poop many times!! Shows something is still working right.Never thought I be happy about poop
I sure hope your new vet is able to get him settled. And I'm so sorry you're going through all of this.