I have a problem talking which is why I sought out a T who does some art and play therapy. When I have been stuck because I can't say it has helped. We have rolled a ball between us with her asking and me answering and it was helpful but not as helpful as me just being able to write things down as she reads them. We have done that twice now and u also drew her a picture one week which made it easier to discuss the topic, bit by agonising bit. I seem to find it more frustrating than her, either that or she is just very good at hiding it.

Don't know if you could suggest any of this to your T. I think it just takes time, patience and practice. Go easy on yourself.