How do I add music to an iPhone from a Mac laptop without replacing the library on either device?

I am trying to add music from a laptop running MacOS 12.4 to an iPhone 7 running 15.5. When I try to do this no matter which options I select, I get a message saying that syncing the two devices will replace media on another library, I guess because I can only sync with one computer at a time? (I already synced another iPhone.) Is there a way around this?