First off, congrats on the weight loss Aweomeness.
And yes, you're perfectly normal. I think a lot of people here have found their appetite decreases quickly when they first start primal. You should eat WHEN (when hungry ensues naturally).
It takes a while to ignore the CW voice in your head that tells you if you don't eat every 2 hours your metabolism will shut down and you'll end up in a withered heap on the floor.