Dan why not try having a snack during that time of day? Like maybe a couple celery sticks and cream cheese, or boiled egg.

When do you normally eat breakfast and lunch? Do you have an early lunch to where by the time 3pm comes around your blood sugars do drop because of hunger?

You have to realize one thing. There is NO glucose in your system anymore, to hold you off during long periods between meals. You need to eat 3 meals a day or 6 smaller ones. The first 2 weeks your body is stressing out over thinking it is starving to death due to the fact you are forcing it to change fuel sources. If you are feeling faint and weak, it is your body saying I am hungry.