keto stix are not reliably accurate. they do measure spilled ketones, but that is often a factor of hydration. plenty of people are in ketosis, burning fat and never turn strips any color at all.
wl through cw is usually just lower-cals, but by its nature that means at least lower-carb, since there is less food. those kinds of diets are often too low in protein, so people end up losing some fat, but muscle too.
meat broth should help with some minerals and electrolytes vs. water, so fasting might be easier with it. initial weight loss is usually just water anyway, so you don't really need to fast.
As I ate the oysters with their strong taste of the sea and their faint metallic taste that the cold white wine washed away, leaving only the sea taste and the succulent texture, and as I drank their cold liquid from each shell and washed it down with the crisp taste of the wine, I lost the empty feeling and began to be happy and to make plans.
– Ernest Hemingway