If you’d like to switch your existing CBS All Access subscription from Commercial Free to Limited Commercials, please visit www.cbs.com on your computer, phone, or tablet, and follow these steps:
 
1. Click your username in the top right portion of the screen, then select "CBS All Access Account" in the dropdown menu.
2. Click "Edit" next to Your Subscription.
3. Re-enter password and click "Sign In".
4. Choose "Limited Commercials", then click "Switch Plan".
5. Upon successful downgrade, a confirmation screen will appear.