How do I switch from my suspended YouTube Brand account to my primary G Suite for Education YouTube account?

While your Brand Account is suspended, use of your Brand Account will be blocked on YouTube, Google My Business, and Photos. 

You will still be able to access Google Services (i.e. Drive, Classroom) with your primary G Suite for Education account, provided those services are enabled by your school’s admin. To access YouTube, you may need to switch to your primary account from your suspended Brand Account. You can do this via the YouTube channel switcher.

YouTube Channel Switcher