How long should a sleep meditation script be?

Long enough that you fall asleep before it finishes, which for most people means 20 to 45 minutes. A sleep script does not need a tidy ending, since the goal is to drift off partway through. Pacing matters more than length: slow delivery, generous pauses, and a gradually softening voice help the body settle. StillMind can generate longer wind-down scripts when you want room to fade out.