how to change windows insider program Canary to dev channel

As per Microsoft, Insiders can’t switch to a channel that is receiving builds with lower build numbers without doing a clean installation of Windows 11 due to technical setup requirements.

So in this case, you need to make clean install.

Refer 'Switching Channels' here:

https://blogs.windows.com/windows-insider/2023/03/06/whats-coming-for-the-windows-insider-program-in-2023/