I've been keeping strict VLC (<20 g / day, no fruit, no wheat, no sugar, etc. etc.) paleo for the last 6 weeks. For the first 4, I felt fantastic every day, was never tired, and have shedded nearly 30 pounds since I began (I started at 330 lbs and am now 302). I am a 25 yo male.
An issue that I've been dealing with for the past 2 weeks is a markedly reduced appetite - to the point where I literally have to force feed myself. This typically occurrs around 5-6pm, and the meal consists of a chipotle salad bowl with 2 servings of chicken and 1 of steak, sour cream, guacamole, tomato salsa and cheese. It comes out to ~1000 calories per the Chipotle website.
Here's the problem - after eating the chipotle meal described above, I am totally exhausted - I get the same feeling I used to get after eating an even moderate-carb meal, and end up passing out for an hour (sometimes two, and yesterday evening for 3, which is why I'm now worried enough to write this email). After I wake up, I have a decent amount of energy, but still nowhere near what I had in my first few weeks eating this way.
I understand that I am probably not getting enough calories, and am thinking of ways to up my caloric intake taking into account my serious lack of appetite...but for now, I'd really just like to be able to eat paleo without passing out. Any advice would be much appreciated.