You must end one-on-ones with an agreement to own the decisions made. Jason Evanish argues nothing discussed in a one-on-one matters if you don’t follow through. Confirm that progress was made at the beginning of your next talk — did you both do what you said you were going to do? Answering “yes” leads to progress, momentum, and trust between both of you.
Too often 1:1’s are like a prolonged stand-up. “What are you working on?” etc. I like this guide’s instruction on open sharing.