I normally have something happen outside of the inner dialogue- someone speaks, the wind blows off a hat, a dog barks, etc. to move on from exposition. Pacing is something I struggle with, I kind of just resign myself to the pacing not being great in the first draft because I know once I finish and reread the whole book I can point out the issues and edit
I can do everything in a story (pacing, transitioning, opening, concluding, twists) EXCEPT for writing casual conversations between characters because I end up making them sound super robotic/ make the story very dialogue-heavy which I hate.