My dad made an Xbox account and linked his Microsoft account to it

Hello there,

If you want to add a new email to your dad's account without him losing anything, you can always add an alias. The alias will allow you to use your own email to sign in with all of the data intact. You can read and follow the steps outlined to add an alias HERE. Hope it helps!

nothing can be done, the microsoft account IS the xbox account.

you will need to start from scratch, but if he leaves his account on your xbox as the home console then you still get access to most of the purchases.

My dad has made his Microsoft account a long time ago and I'm already in his Microsoft family.

Well, no because I made the account myself and I use my dad's, which he made with his own account. So, my parent doesn't have any restrictions

But I can't I made the account on my xbox live account on my Dads email