alexandra, I think you should have a face to face talk with your T about your worries and fears. When are you moving to another city? Can you continue face to face therapy until then and switch to phone therapy once you relocate? I think if I were a T, I would not want to switch the frame until absolutely necessary (when you leave). Can you take advantage of his full presence while you are still in town? Or is it too painful to see him since your separation is on the horizon?

I'm sorry this is so hard.