A narrower follow-up, since the general answer is now clear:

Was that from a primary source or from a summary of one?

lisa_labSD said:

If you are going to change something, change one thing and give it long enough to express itself.

I do not accept the framing. The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.

lisa_labSD said:

If you are going to change something, change one thing and give it long enough to express itself.

True, with the qualification that this is a self-selected group. The people for whom it did not work post less, and that shapes everything we think we know.

lisa_labSD said:

If you are going to change something, change one thing and give it long enough to express itself.

Thank you for spelling out the reasoning rather than just the conclusion. I will report back once I have actually tried it.

Closing the loop on my own question.

Reporting back for the archive rather than for the thread: I did the narrow version of what was suggested, gave it the full interval, and it settled. Posting it because threads without a follow-up are half a thread.