I went out of ketosis and gained about 7lbs in only 2-3 days. So consider your 3lbs in 2 weeks good! It looks like if you wanted to, with a few modifications, you could probably live a low-fat WOE if you wanted to and maintain your health, but think about all the stuff you'd be giving up. The bottom line is that any way you cut it (the meatloaf, not the cake) low carbing is easier than low fat on any day