Sounds like your way of dissociating. Very common if you have a trauma background and things become too hard or overwhelming. I dissociate terribly with trauma work, I’m taking a break from it because it was taking up all of my time between therapy and I was having trouble functioning and being present for real life.
Maybe tell your T what’s going on and suggest looking at ways to help you ground. I haven’t found one that works for me but there are a tonne of people on here with great grounding suggestions.