A Prompt Switch is a technique for changing the cue or signal for a behavior.
The new/weak cue is given, verbally or physically followed immediately by the old/strong cue. Then the behavior happens.
This sequence is repeated many times and then offer the new/weak cue and the behavior will happen.
This technique is helpful when you identify an unintentional signal or cue for a behavior. If you identify the unintentional, old cue, just put the desired new cue right in front of it.
Repeat a bunch of times and then omit the old, unintentional cue.