How to change my date of birth
How do I change my child’s date of birth on family sharing
iPhone 12, iOS 16
Question marked as
If the date of birth is currently set to anything below 13 years of age, you will need to contact Apple support directly to have it changed. click here ➜ contact Apple Support
If it's set to 13 or older, you can change it by logging in to your child's Apple ID at https://appleid.apple.com and changing the age there. If you change it something below 13, you will need to verify and approve the change from one of your devices.
click here for more information ➜ Update the birth date associated with your Apple ID - Apple Support
