I personally do not think "baby steps" with gluten free bread and rice crackers is a good idea. What you want to do is not willpower your way through this change. You want to eliminate what is keeping you from changing.
What will really work is to eat a very large, high fat, high protein breakfast first thing. No "grab-and-go". Get up earlier if you have to. You want a large amount of protein so have a portion size similar to dinner of real meat. Have a piece of chicken (skin on) or a piece of steak (fat on) a whole can of tuna. Have some eggs (if they are by themselves without meat, have about 6.) Cook everything in bacon grease, leftover lamb fat or some other saturated animal fat. You can have some low-carb vegetables along side such as leafy greens, cauliflower, mushrooms, a little onion for flavor, but save your daily ration of carbs for later.
You may notice that all your cravings vanish right away. Or it may take a few days. You will find it easier to get all the way to lunch, maybe further than that, without needing anything to eat.
This is one part of the Leptin reset and it, along with making sure to get outside in the sun at noon was the only part of the Leptin reset I needed to do to make a transition to a primal diet an easy thing. By easy I mean, there was no temptation. I didn't have to worry about sandwiches and muffins at the office because I didn't even get hungry until about 4pm. I walked around in a daze for a while because my mind was empty of thoughts of food and hunger.
Female, 5'3", 48, Starting weight: 163lbs. Current weight: 135.
Starting squat: 45lbs. Current squat: 145 x 4.