I am somewhere in the transition to making everything myself. We have been doing WAPF diet for years, but bought a lot of the stuff already made (local farm and health food stores). I make my own stock and soups, and sometimes make crackers and snacky food. I still buy my bread and dairy products (like cottage cheese). Otherwise I make all of our meals from scratch. A typical day for us is like this:
Breakfast: Soaked kamut pancakes (bought kamut flour already milled), butter (bought from farm), maple syrup, sausage or bacon (bought from Polyface farm)
Lunch (our big meal): Homemade soup (made with homemade stock), salad of some sort (yesterday was asparagus, beets, goat's cheese-bought, pine nuts, and homemade dressing), then entree of something like Baked Chicken, Roasted Sweet Potatoes, and steamed broccoli.
Supper: Homemade soup and store-bought sourdough with farm-made butter.
DH and I don't snack, but DS will have cottage cheese (farm made) and fruit 1-2X a day.
Beverages are just water and tea. I would like to brew some lacto-fermented sodas at some point.
So I'm definitely still transitioning and buying a number of things already made. The way I say it: I make all of our meals from scratch but don't yet make all of our ingredients.
To answer your question, for where I am now I spend about 3 hours in the kitchen a day (that includes prep, cooking, dishes, cleaning, etc.) When I add bread, dairy and sodas, I expects to add 1 more hour a day most days, alternating what I do each day (i.e. Mon is bread day, Tue is butter and cottage cheese day, Wed is sodas, etc.)