I am VERY new at this approach, myself. So I am by NO means an expert, but here are my takes on a few of your questions:
leptic wrote: 1) is the 'water and coffee fast' I've heard mentioned considered to be a good option? what exactly does this entail? (other than the obvious)
The coffee helps curb appetite, helps vacate the intestines more quickly, and encourages further intake and expulsion of liquids, which is very important during a fast. Also important for a fast is keeping up vitamin and mineral balance--as I understand it as a lay person. Starting with a fast, in my opinion, can jump-start the ketogenic process and lead into very-low-carb eating without cravings getting in the way. It is sort of a cold-turkey versus gradual-cut-down sort of thing.
leptic wrote: 2) I had also hoped to use my time off to re-establish my exercise habits, but suspect this should wait until after the fast. Comments?
Very intense exercise can complicate a fast, and intense exercise during low-carb intake is only useful if doing it for a metabolic reason that professional athletes and experienced supervised body-builders might employ. Otherwise, gradual and tentative should be the watchwords until ketosis has set in comfortably for a while. In my personal opinion and experience. Keeping up good aerobic is necessary for me to feel well, so I did some walking, treadmill, and elliptical--just not as intense as usual.
leptic wrote: 3) because it's unlikely my wife will subscribe to this idea, does anyone have tips on how to limit carb intake when living with others? I suppose I can start offering to cook more (especially if my energy increases through cpap and/or diet) which will give a bit more control.
Naturally, you will find your own way with this. But my experience is that it isn't an issue. I put a summary up on the refrigerator door to explain what I was going to attempt. Here is what I wrote up for myself as a personalized intial approach that my wife was onboard with right away. Your approach may vary from mine:
FASTING DAYS (72-hour limit):
Daily Multivitamin
Water (a LOT), Coffee
Broth and electrolytes when needed
DIET LIST FOR NONFASTING DAYS:
Daily Multivitamin
Broth
Green leafy veggies (a LOT)
Onion, Tomato, Pepper, Avocado
Garlic, Olives, Pickles, Mushrooms
Oil (extra-virgin olive, coconut, avocado)
-----Also, in moderation:
Eggs (pastured or omega-3 whole, if possible)
Fatty fish (salmon, trout, tuna, mackerel, shrimp)
Meat (red, poultry)
Cheese (cheddar, goat, cream, blue, mozzarella)
Yogurt, Sour cream, Cottage cheese (full-fat only)
Butter, Cream (grass-fed if possible)
Nuts (almond, walnut)
Seeds (flax, pumpkin, chia)
Nut butters (peanut, cashew, almond)
Almond milk
NO:
X –Grains (wheat/corn/rice), Potato
X – Beans, Peas, Carrots, Chickpeas
X - Sugar/Fruits (other than berries)
I believe your other questions have been well-addressed.
Keep us informed!
-jeff