How fat adapted are you?
Here's a challenge for you tomorrow. See how far into the day you can go before you have to eat something. You don't have to feel like you're starving, but if you normally get up and just eat because that's what you normally do then try to skip it and see at what time you actually get noticeably hungry. This will help you know whether you're becoming fat adapted and if you stick to the Primal Blueprint and try this again in a couple weeks you should see a noticeable increase into how far into the day you can go before you need to eat.