Yes, breathe!
I often make just three very short notes, just a couple of words maybe, so that
I don't muddle myself. I tell T at the start that's I've written notes, so that she knows I've got something to say, and not to lead me.
Also, if I think I'm going to be anxious, I take a nice snuggly scarf to wrap in, and something like bangles to fiddle with