I think it’s important to develop trust with your T and hiding issues you’re not ready to talk about might not be the best idea. Perhaps you could go into this session with an open mind. Allow your t to direct and ask questions. If you begin to feel too uncomfortable on a topic or if something keeps coming up for you that you’re not ready to talk about, you could just reply “I’m not ready to talk about that yet”. A T will respect that. This is your work, and you decide the pace. There is never pressure to go into something your not ready to yet.