I have 3 girls 2 of which are normal weight between 10 and 11lbs) and 1 that is about 3 pounds overweight, weighing in at a whopping 15.5lbs. Currently I am feeding 1 5.5 oz can of Wellness split between the 3 of them and 1/2 to 3/4 cups of the Purina DM twice daily. My oldest who is at an ideal weight is also diabetic and is a grazer. She refuses to eat a large meal in one sitting. My goal is to get each cat to eat 1/2 5.5oz can in the morning and evening and then I will also feed 1/2 cup of dry at night between the 3 of them. Is this enough food for each cat and is there a way to break an almost 15 yr old cat from grazing? Any feedback would be appreciated!