I’ve never used a weight loss food. If they start getting a bit chunky i reduce the food a bit of what they are eating. I also keep protein to a maximum and carbs to a minimum (for kibble, they always have more carbs than canned and raw) which helps keep them in shape. A quick glance at farm and fleets website, the only brand im comfortable with is Wellness. I didnt see it online, but perhaps in store they have Wellness CORE. I’ve heard of people using Wellness CORE reduced weight or whatever it’s called with success, so maybe try that. Depending on what you are switching from, if its a lower quality food you would be feeding a lot less on any wellness than you would on that, and the better ingredients will assist in natural weight loss
