Could be. But it’d probably seem “pretty dumb” on such a site. This is pretty basic stuff - hoping a hobbyist on FR sees it...
OTOH, I am a member on “All About Circuits”. Might try over there if anybody would deign to answer. (eye roll)
There ARE “boost-buck” PWM supplies that can work with a source that varies both above and below the desired output voltage to the load. Those get a bit more complex / pricey, though.
I have parts coming to add to some I already have here that should make either of the 1st 2 options run. Not too worried about heat dissipation / sinking for another couple months... :-)