Child account is parent account. How to change without child losing all of his gaming data?

If its an adult account then that means the date of birth that was selected when the account was made would make it over 18 years old. If that is the case then there is no way to make it a child account. There is no way to change the date of birth on an
Xbox live account after it has been changed.

The only way for your son to have a child account would be to make then a brand new account and select the correct date of birth for your son. Your son however would lose all save game progress from the adult account as nothing is transferrable between accounts.

A) can i switch the game data from my account to his

Unfortunately game save data can't be moved between accounts.

B) can i set screen time limits to my own (parent) account

Unfortunately no as well.

How can i get him back on his child account without him losing all his progress?

He will have to start over on his child account, where you can
set limits for screen time. I also suggest changing your password if he knows it, and possibly

setting a passkey on your account so that he can't log in on it to get around screen times.

Thanks for your help - annoying that they don’t make this fully clear to unwitting parents buying kids xboxes.

Will he also lose in-game purchases? like on fortnite etc…

Is there no way to convert the existing account into a child's account or otherwise apply parental controls to it?

Cheers!

Hi

Yeah sorry, there is no way to change an adult account to a child account.

Dont use the console as a child minding device. The child must not have a Child account as if you have a child account you cant change anything without the parent account signed n also

The simple fact is that the current set up does not allow parental controls, without

1)creating a dummy email account

2)making the parent account a child account and using the dummy email to create another parent account.

3)re-linking everything to dummy parent account (credit card, game downloads, passkey etc.)

4)losing all saved game data

As a parent i should not have to jump through all these ridiculous and convoluted processes to set simple screen time limits. Nor should we have to lose save game data to do so.

Its absurd. It astounds me that anyone thinks that's an acceptable solution.

Microsoft may not ever change the policy but the current setup doesn't work.