Sync Apple Notes to M365
Because you cannot use iCloud to store any university data unless it is classified for public consumption, you can't sync Notes on MacOS using iCloud.
Instead you can sync Notes to your M365 account (ie your UT Email account)
CAVEAT: Notes synced to M365 cannot have any formatting, they will only be plain text
In Notes, go to the "Notes" menu and select Accounts
That will open System Settings, Internet Accounts
You may have already added your account for use with Mail or Outlook. If you see "Exchange", then click on it, otherwise click on "Add Account" and skip to Adding your account below
In the Exchange settings, make sure Notes is enabled.
Adding your account
In Add Account, enter your UT M365 email address (NOT a UTMail address) and click Continue
For provider choose "Microsoft Exchange"
Then click Sign In
You'll be asked to confirm you want to sign in to your Exchange account - click Sign In again
You will get the UT login screen - enter your eid password and click Sign in. Then you will need to enter the code into Duo.
Click "Yes this is my Device" when asked.
Then select the apps to use with this account. If you do not plan to use Mail, Contacts, Calendars, or Reminders, turn those off, but make sure Notes is selected. Then click Done