Task: I had completed the first day workout and felt it was too hard. Customize the workout plan by sending feedback to the coach in the Home Workout app.
Steps:
Open the Home Workout app
Click on A little hard option for feedback
Click on the Next button at the bottom of the screen
Select the Way easier plan 
Click on the Done button at the bottom of the screen
Click on the Done button at the bottom of the screen
Click on the Done button at the bottom of the screen