Make the simulation small and specific
Choose one familiar song and set up as you intend to perform, including instrument position, chord display, and any planned spoken introduction. Invite one supportive listener if that feels useful, or simply record a private take with your usual device. Decide in advance that you will finish the song unless there is a practical reason to stop. The exercise is not a test of your worth as a musician. It is a way to notice which ordinary actions become harder when you treat the start and finish as real events.
Include the moments around the music
Begin with your hands at rest. Open the correct song, check its key, take a comfortable breath, and give the planned count-in. Follow the synchronized lyrics and chords while allowing brief glances away during familiar phrases. If you miss a change, preserve the pulse and return at a known landmark rather than restarting. After the final chord, allow its sound to end before reaching for the device. These surrounding moments deserve rehearsal because they affect your attention even though they do not appear as chord symbols on the screen.
Review behavior rather than confidence
Afterward, name one action that helped and one action to change. Perhaps having the opening chord ready made the start easier, or searching for the next lyric caused a rushed entrance. Practice that specific action once outside the full run. If you use a listener, ask for concrete feedback about whether the song stayed understandable, not a general rating of your performance. Increase the challenge gradually by adding a second song or another listener only when useful. Feeling nervous does not automatically mean the rehearsal failed. Finishing with a clear recovery and a deliberate ending can be valuable practice even when the experience still feels unfamiliar.
Choose a manageable stopping point for the exercise, such as two complete takes. Repeating indefinitely can turn a useful simulation into an exhausting search for perfection instead of practice at showing up and continuing.