How do I disable the background process of Cortana in Windows 10 without hurting Search

I don't mind if Cortana remains available, I'm not looking for uninstall, I just want to permanently disable the background process of it (as an administrator) in a way where Windows Search (start menu and file) is still functioning.

It is possible somehow? Basically, I just want to continue using search but without the the background process of Cortana.