I zone out, sometimes don't hear what my T says anymore, my body feels weird, everything just feels off. It's hard to describe.
My T checks in with me a lot, asks whether I'm able to hear him and so on. If I don't respond to his questions he might raise his voice a bit and say something like 'hey'. If it doesn't get better he helps me with grounding exercises, like touch the floor with your feet, describe the feeling of the seat, count all the red objects in the room...