Not wanting to work isn't reason enough for your T to leave. T's are used to clients going through phases of not wanting to work. Do you not want to work EVER again? That would be a problem. I've wasted plenty of sessions not wanting to work and getting nothing accomplished other than going on a walk with him. He doesn't mind...because its MY session, and if all I want is 50 minutes of being calm and stable, I can have it.
Don't worry to much. I think it really is pretty normal.