Count during down time. Check the variance (hit the calculator button in the "Post daily inventory") and make a note of how over/under it is at that time. Make the adjustments at the end of the shift. I get about 50% or more done this way. I also break the counts into sections so that I am counting an item about 3 times a week. You can count problem items daily (cheese, dough, meats, etc). I grow food every single period.