Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Jack,
In your scenario, you need to sign up for a new Office 365 tenant, then refer to the following article to migrate your mailboxes and service settings from your current tenant to the new tenant.
How to migrate mailboxes from one Office 365 tenant to another.
Let us know if anything is unclear.
Best Regards,
Aaron