It could also be that his supervisor has said something to him about his boundaries with you that has caused him to change tact.
I've said it before, but I really wish Ts would have it drummed into their heads in training that consistent boundaries are absolutely paramount for the client. You can't just go changing the boundaries without causing tremendous pain for the client.
I've been there, and I know how painful it is. I'm sorry you have a 3 week break before you see him, but I think you should raise with him how the boundary shift affected you. I hope he can offer a reassuring explanation