I would start by recounting to T about what happens when you are alone versus the optimal of experiencing in his office. I would also maybe start journaling instead of just having things happen in your head, get some stuff out on paper (where perhaps it will illicit some of the original pain when re-read).

You have two "ends" of a continuum, figure out ways to move from one to the other. Tell your stories to T, dispassionately, if that's all you can do at first, but get his reactions to the stories (he'll hopefully display emotions about hearing them), etc.