A lot of times those cravings are a result of missing a nutrient from your diet -- so if you're not feeling hunger pangs, then try to stick to what you're doing, it's probably right.
There are also longer term nutrients that you don't need to have on a daily basis, so don't take that as gospel, still monitor your own well-being and adjust accordingly.
There's also nutrient interactions (protein earlier in the day reduces the craving for carbohydrates later in the day, etc.), so...there ya go.