Roxie weighs 130 lbs.( my Rottie) She should only weigh between 90-100 lbs per our vet. I feed her innova senior. Based on what her weight is now the website calculates her at 51/4 cups per day. I did this on a 75% ratio as she also gets a small amount of cooked food added each night to her last feeding. She also gets neck (beef, she wont eat raw chicken)bones about once, sometimes twice per week. I have actually lowered her to 3 cups of dry per day for the last month, and given her green beans as she acts hungry. She is not losing any weight. Should I switch her to a weight management brand?