MacBook Air 6,2

I have a MacBook Air 6,2, and I installed OpenCoreLegacyPatcher and macOS Sonoma. Everything was working well. I upgraded OCLP to 2.0 and then upgraded to MacOS Sequoia via the MacBook upgrade. The one application that isn't working in Sequoia that was working in Sonoma is Facetime.

So, I want to return to Sonoma. What is the easiest process to do that? Should I start over from scratch?

Thanks in advance.