> please quote your source for the one-year rule’
So far, I am not able to recall or find where the one year idea comes from. I think Gemora says something like “next year” .. or my memory is mis-firing.
For the general idea of going back on regulations that are not acceoted: Avodah Zorah 36 discusses a possibility of cancelling the law that majority of people did not accept. An example of an empirical approach – they investigated and found it that the law was not accepted. And then cancelled it. In our times, they might have just denounced all non-acceptors as Modernistas …