Managing Family Sharing
I mistakenly created a double Apple ID for my son, how do I remove one of the accounts from Family Sharing? He is below 13, can I still remove one of the double accounts?
You can try the below. Make sure you sign out from the places in the 4th link before deleting the ID.
How to delete your Apple ID account.
What to do after you change your Apple ID or password - Apple Support
If necessary, contact Apple ID Support. See the Apple Support articles below for contact information.
Apple ID - Official Apple Support.
Contact Apple for help with Apple ID account security - Apple Support. (Link doesn’t always load)
Get Support Work through the screens to get a chat option.
