Great episode.

That she's already bothered by poop in her diaper is the big thing, as I understand it. Until then, it's very difficult.

We tried a few different things and ultimately I concluded that it mostly just happens once the kid wants to do it. I'm sure with great effort you can speed it up by a few days, but the evidence on potty training isn't very compelling.

In keeping with your previous episode, since the method probably doesn't matter that much, you should just support whatever it is your wife wants to do.

Good luck!