It is easy to imagine that meaningful practice requires a perfect hour, a quiet house, and an ambitious plan. Most days do not line up that way. A short session can still move a piece forward when you decide what you want to notice before you begin.
Choose one passage. Play it once without stopping, then name the thing that needs attention: a transition, a fingering, a rhythm that keeps slipping away. Give that detail a few calm repetitions and finish by playing the passage in context.
Keeping a small record of where you worked makes the next session easier to start. You are not beginning again; you are continuing a conversation with the music.