You can restart a relaxation technique during a sleep session by doing a double tap on your touchpad. The program will be the last one set up. For more informations, go to our dedicated article "Discovering The touchpad".
Please ensure that the Touchpad is unlocked by swiping on it with your finger. You will hear a vocal confirmation. Then double tap on your touchpad to restart the technique.
Please note that you can also restart a falling asleep feature with the app.