Sounds like a tough session coming up. (Hugs)
I can totally relate to coming on my words. Yesterday t and I were just talking about emotions and I couldn't spit them out half the time. I able certain words also (replayed to the csa), though t has not made me confront those yet.
I've found saying them in t makes it a bit easier because it's safer there... I hope you can find that safety and comfort as time goes on.