Just a warning to readers that the Psak I got for my stove was received approximately 10 years ago, and I may be remembering it as more lenient than it actually was. We don’t turn on/lower flames anyways, so I had no need to revisit and refresh my memory. The flame is turned on before Y”T, and there it stays. (For those worrying about shidduchim, Y”T is a great way to avoid the Yom Tov/Yontiff divide, at least via the written word :)).
What I definitely do remember is the prohibition regarding turning off the flame.
I hope that no one is Paskening for themselves from a blog, but still wanted to post this disclaimer.