Lately, he's been saying, "what else?" when he wants a new topic from me.

I feel really threatened by that. It is new behavior from him. It makes me feel that our sessions are not proceeding fast enough for him and he wants me to get all my stuff out on the table. It makes me feel like we are speeding too fast through stuff and he doesn't consider what I bring up to talk about worth spending more time on, so he rushes me to move on to something else by asking, "what else?" He didn't use to do that. I wonder if lately I am bringing insignificant topics to him that he doesn't consider worthy of therapy time?