We are switching from California Natural to Diamond Naturals. We feed 2.5 cups of the Calif Natural a day. In order to have the same amt of kcals we would feed 3 cups of the Diamond Naturals. This IS the amt recommended on the bag and I know that's often considered high but she is not fat in the least (in fact to me she looks thin but dh and the vet both say she looks perfect) so I don't want to cut back her food. So anyway we will be transitioning her over about 9-10 days. How do we do the amounts? Do we give the same amt when it's mostly the Calif Natural and then a little more for the half and half mix and then a little more for when it's mostly the Diamond Naturals? I wish we didn't have to switch but it's impossible to get the Calif Natural on a regular basis here and the cost is pretty high too. It was $45 a bag and I was told shortly after we bought it that the price went up about $5 a bag.