For anyone following this, here I am 12 hours later after having dined on a relatively low-carb meal with some sweet potatoes and a couple of small bites of the wife's dessert of crème brûlée. I've yet to have breakfast and did some low to moderate intensity cycling this morning. My BHB is 1.6 mmol/dL, definitive signs of nutritional ketosis with very little effort on my part.