How do I change my child's apple if from a adult back to a child

according to the instructions here > Family Sharing and Apple IDs for kids - Apple Support - the ¶ says

Use these steps to create an Apple ID and add the child to your family group:

1. Go to Settings > iCloud > Family, and tap "Create an Apple ID for a child."
2. Enter your child's birthday and tap Next. The birthday for a child's account can't be changed after the account is created. Be sure to enter the correct date.

The only thing you can do is create another NEW account with a new alias - such as "Child'sNameTOO" with correct birth date - for example, or better yet, let the child choose their own alias

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You're welcome. This is another oddity in the design of AppleWorld. It is clear that you cannot change it - when you try - but not when you Create a New AppleID

go figger

buenos tardes

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