Yep, I've been there too...multiple times lol. Bulletproof coffee helped me make it through a few afternoons when all I wanted to do was curl up under the covers and stay there until the next day! It does pass, and for me, energy levels end up being higher than before I started.

This might help -- http://whole30.com/2013/08/revised-timeline/ It's not keto-specific, but in my experience, there's a lot of crossover in the withdrawal/induction process.

Here are a couple of suggestions I have:

1. Don't intentionally restrict calories during the induction period. Induction's hard enough on your body, and a caloric deficit also causes stress. The combination of the two is a set up for misery. The keto ratios generally have a suppressive effect on the appetite, so while it may seem like you're eating a ton of food, you're probably actually not eating as much as you think. Besides, it's only a couple of weeks, which isn't much in the long run, even if you do manage to eat over all the time and gain a couple of pounds.

2. EAT ALL THE FAT! If you're hungry, eat, even if it feels like you're eating all the time, but eat high-fat foods. Hell, if you can handle eating it straight, even a spoonful of coconut oil is acceptable (you could also use butter or other healthful fat, but coconut oil is said to have a beneficial effect on the ketosis process).

3. Make and drink bone broth. Take a bunch of bones, stick them in a stock pot or slow cooker, cover in water, add a tablespoon or so of vinegar and bunches of favorite veggies, bring to boil, then reduce to simmer for 8-24 hours (longer for larger bones), in last couple of hours add favorite herbs/spices, strain liquid into container to cool. Add to drinks, food, or drink straight. Bone broth is full of all sorts of nutrients, including most of the electrolytes. It will also help calm any GI upset the new diet might be having on you.

4. Don't fear salt. Ketosis is naturetic. That means it causes your body to dump sodium (NA = sodium). This is why electrolytes are important. When sodium levels get too low, the body will start going after potassium, and so on down the line of electrolytes in an attempt to keep them balanced. So, not only do you not have to avoid sodium, but you might have to add salt to things in order to make sure you're getting enough. (Yeah, basically, keto turns conventional advice on its head, anything conventional wisdom says to do, do the opposite, basically.)

5. Drink plenty of water, especially when exercising. Lower carbs means lower glycogen stores, and lower glycogen means less stored water. It can be easier to dehydrate in certain circumstances, so make sure you're getting plenty of water. Dehydration makes induction even more miserable.

coconut butter is also a low carb, high fat treat right out of the jar. Less oily feeling than coconut oil, a little higher in carbs.