Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Once you have redeemed or associated a subscription with a Microsoft account, it is permanent, and there is no native way to transfer it to another Microsoft account. You can cancel the subscription and then resubscribe using the correct account.
However, since this was a mistake, try contacting Microsoft Support directly to see if they can manually transfer it on their end.
Click this link: https://support.microsoft.com/contactus/
Sign in to your Microsoft account.
Select Microsoft 365 > Click 'Get home support'.
Type "Chat with an agent" from the text field and press Enter.
Click "Contact support" at the bottom.
Select the product you need help with.
Follow the prompts to connect with a live agent or request a call back.