I think it's good not to put yourself under too much pressure - that share more than what feels comfortable at the time, or to hold back from something you really want to share. My T used to say "you can't do therapy wrong".
Can you talk to your T about the topic of sharing and appropriate levels of intimacy in therapy? If you hear your T's take on this it might be helpful for figuring out how this can work in your therapy. From what I understand different Ts can have different approaches and it also depends on what kind of therapy you are doing, I think.