What if you tell current T, "I'm so frustrated by your asking me what I want out of this therapy that I want to call old T and ask him how we did things. I'm afraid of alienating you but I don't how to make this therapy more effective for me." At least, that's how I read your post.

You're stuck, and you want to go to the person who knew how to unstick you. Makes perfect sense to me--but the relationship that's there for you right now is this guy (or another local T, if one can be found, if you decide to ditch this T). Maybe bringing your questions and doubts can help build the relationship with this T.

I say this because I've only had one T, but we got a lot of good "stuff" out of my frustration with him for asking me to set goals. That request of his triggered a lot of worries and feelings in me that I had to express before I could actually see my goals.