Hi, Sunflower,
Welcome to the MH forum of SR!
I'm glad you trust your doc and that he's a well respected doc to boot.
Many docs use meds off label. It only means that the FDA hasn't yet approved it for a particular reason. But, that doesn't mean it doesn't work for that reason. If it's working, well, that's all that matters, right?
Others should come along to share their own ESH. I wish you the best. Let us know how it goes, ok? We care.
Shalom!