My 8 yo female cat has luxating patella (dislocating kneecaps) and needs to get weight off. She had always been fed half a pouch of meat each day and biscuits always sat out but after finding out she has something wrong (1 month ago), I started just 2 pouches of meat a day. She was weighed again today and was exactly the same (this was at a different vet who said because they use a different type of scales to the other place, it could be different) What do you recommend to get weight off? biscuits/meat and how much? what low calorie brand would be good? Also she has to be on metacam long term. Anyone else have a pet that has had to be given this long term and have they had any problems because of it?