sorry for this. I know what it feels like to have the impression of a waisted session, I think sometimes we tend to talk about secondary things when the major things are too much and to talk about in that moment, even if prior to the session it doesn’t feel so.
I have found out that writing can help. I writeu after a “waisted” session on a heavy one, whenever I feel i have not said everything, and prepare a sheet with my topics for the next session. I always do that now, because I also tend to forget what I wanted to talk about out of panic. Hope you find it helpful.