I encourage everyone prepping to do periodic calorie inventories. When you are stocking food, you can EASILY overestimate what you have stored, especially if you have kids. Do the math using online calculators to figure out a good ballpark for each family member's caloric needs (also factor in the fact you may well be doing more physical work than you normally do if you are relying on your food stores, depending on the SHTF event).
For example, my family currently needs about 8,500 kcal/day, which means I need about 250,000 kcals/month of food stored. My most recent calorie inventory showed that I had, in my head, estimated that I had about 30% more days of food stored than I actually do. We're good for several months here, and of course if things were truly bad we could probably live off half what we need daily right now to survive and still remain mobile, but hope for the best, prepare for the worst...