You will probably be able to lower the Insider program channel - without a clean installation of Win

[A1]

     What’s coming for the Windows Insider Program in 2022 | Windows Insider Blog                                                                                                                                  "  Now’s a good time to start thinking about what Channel is best for you. We will soon be giving Insiders a window in which they will be able to switch from the Dev Channel to the Beta Channel. Stay tuned for details in the coming weeks. "

[#2]

@A1 

Important - you can already lower the Insider channel!!! ( without a clean installation of Windows )

For Dev channel, and Beta - t the same version (Switch works)

Announcing Windows 11 Insider Preview Build 22581 | Windows Insider Blog