Windows Server 2008 R2 Foundation, in-place upgrade to Server 2012 Essentials

I have a Server 2008 R2 Foundation running as a Domain and terminal Server. Now I have to update the Operatingsystem.

I bougth a Windows Server 2019 Essentials Editon. But I found no way to upgrade the Foundation Server to any Essentials Server. I do not have a second Server for a Migration.

What can I do?

I don't want to do a new Installation.

Is there a way to get the Foundation Server to a Essentials Server?