I bring a notebook of topics I want to discuss. My T believes that the client directs the session. But she will touch on topics I might want to avoid but will never push the agenda of something I don't want to talk about. She very naturally guides me if she believes that's what's needed but she talks less and I talk more. It's in my control. I would never be comfortable with a T that behaves the way yours does. If I were in your situation, I'd say, "No. I don't want to talk about that right now. I've come to discuss these other matters"