This may be off the wall, but would it help, after telling your T how apprehensive you are, to play a "Truth or Dare" game without the dare? In other words, you each get to alternately ask a question, and whatever the answer is, it must be accepted with mirroring validation. The idea isn't to do follow-up, but to open the potential for getting the most worrisome stuff on the table and spoken aloud. But also to separate the answer from the response (which for you is probably a feared response at this time.)
Once the stuff is out there, even though it hasn't been discussed, it's sort of known between you. Maybe that would take the pressure off?