I think when you are completely new to Primal it is important to begin very low in carbohydrates just to initiate the "fat burning beast" thing. But once it's initiated, there is no real need to stay very low carb unless you have specific benefits with it. Going cold turkey on the carbs is hard, but it helps get the ball rolling. Once you can burn fat for energy, you will be able to do things like skip a meal (intermittent fast), eat smaller portions, eat a moderate-carb primal diet without cravings or irrational hunger, etc.
In my case, it took me more than a month to adjust to the initial low carb stage. It was a rough transition. I did not try to cut back on my consumption of food. I ate very high in fat. I actually put chunks of butter on cheese for a snack.
The brilliant thing was immediately I was not hungry all the time anymore and found I didn't usually need to eat any lunch. After a few months I could skip a full 24 hours of eating once a week without really noticing it that much. This allowed me to lose weight without any white-knuckling through hunger pangs. I also felt better. I felt healthy, clear, vibrant, cheerful and just generally amazing. Best thing I ever did. But that initial 5 weeks I felt like I was going to die. If I hadn't read that the transition was going to be so hard, I might have thought that low carb was not for me. But I followed the advice about the electrolytes and fat and made it through.
I don't eat low carb anymore these days. I check in now and then with it just to enjoy that intense clarity thing I get from it. I find it very difficult to maintain low carb because my partner doesn't eat primal and he doesn't seem to get how to cook for it. I end up eating a significant amount of beans and rice in the form of Indian food.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Heaviest squat: 180 x 2. Heaviest Deadlift: 230 x 2