How to change child’s date of birth
Change my family date of birth
To change a birthdate, see the instructions in Update the birth date associated with your Apple ID - Apple Support
If the birthdate is currently set to an age under 13, see the following from that support article:
If you need to change the birth date for a child, contact Apple Support.
If the birthdate is currently over 13 and you want to change it to under 13, see below from the same article:
Change a birth date for a child
To change a birth date to any age below 13,* you must be a member of a Family Sharing group, and your family organizer must approve the change. After you change a birth date to any age below 13, you can't edit it.* Learn more about Family Sharing.
- Update the birth date.
- Follow the onscreen steps to send an email request to your family organizer.
- Your family organizer will get an email with instructions to approve the request.