Elaine - I didn't rate r/d, Tom didn't lose any weight with it, so have gone for Proplan light with Lucy (she doesn't like JWB), although she hasn't lost a lot on it, so I have pretty much cut her dry out. Dont know if hte vet mentioned it, but you can't reduce by 30% in one go, you are risking HL with anything more than a 15% reduction, as it is a shock to the system. I would have said a few weeks is too soon to notice that much of a difference, I have found the first few months hard with the ones I have had, as it takes a while to get the right amount of food and exercise - although that might be as mine are rescues and I dont know their habits. Good luck, there are lots of little things like making them eat upstairs to get them moving more, throwing food individually, using treat balls etc.