I would suggest asking your T to be genuine with you rather than getting into specifics. You could also talk about tough and personal space in general so that T would now your comfort level. Then you don't have to tell T what to do but there is less need for mind reading. I also talked to my T about how in the past people would ask me to tell them what I needed just so they could tell me "no". My T asked for a couple examples to get an idea of the kinds of things I might ask for. T then talked very specifically about her boundaries. Now I have a much better idea of what kinds of things I can ask for without being told no.

On the flip side I also work with a massage T who also does therapy. She has a very different take on things as well as different boundaries and personality. 98% of the time she can tell just what I need by watching my face and body... no words. If she "misses it" I am allowed to either use my words or take her hand (because some times I can't talk) and move her to where I need her. She even knows (although I don't think it is conscious) that I like it better and feel more comforted when she is to the right side of me than to the left!

Oh, and seeing as it is CBT you could also get some information out there by talking about it as a self care thing... "When I am upset I like to have people do this" or "I feel comforted when they are able to do that"... Then it gives her an idea of your comfort and what you need but it leaves it more up to her to be genuine in weather or not she offers it too you when the time comes.