I would encourage you, as Breadfish well explained, to write or to tell him about how you see things. I have experienced a less intense version in the neighborhood of what you are experiencing from your T, with my current T several times. I know from my history that I scrutinize the nonverbals/etc more with men than with women and when I do not share negative perceptions at first (which hardly ever happens, it takes me at least one session if not more), I am surprised at how open T is to what I'm saying and how good he is at explaining what he has been experiencing in our sessions. This has been so helpful to me, a check on my wildish belief that I can flawlessly read people (I can't but it makes me feel safe to think I can) and a good way to make sense of how I can distort-- sometimes just slightly-- to attend to negativity rather than the reality mix of whatever is there in the room. It's always more complicated than I thought. Understanding how I was both right and wrong has been eye opening, and healing in some way I can't articulate.

But I also think that being open in your criticism or negative feelings is an important test of a T, one that they seem to fail some of the time. I think when you perceive a change as you have, it's worth it to try to communicate it in whatever way is best for you. It might be that things are not exactly how you perceive them to be.