My T did something very similar with me but he lumped it in with inner child work. We discovered that my trauma started much younger than I thought which helped us both understand some of the challenges I have more clearly. I’m sorry I can’t explain it better, those two sessions were really hard and I even had to have T stop at one point. The experience sucked lemons and I know we have more to do... but I can say after the second session of it I could see some potential benefits.