Is Lacy still eating canned W/D food? I'm concerned because this is too high in carbs for a diabetic cat, and I'm worried it might send her out of remission after a little while. It's very important that a diabetic cat, both on and off insulin, has less than 10% carbs in their diet.
If you need food suggestions, there are a TON of commercial foods that are diabetic safe, better quality and less expensive than the W/D.
Here's a link to the cat food nutrition charts. If you look, you'll see that W/D is
26% carbs, well over the recommended amount for a diabetic cat.
http://felinediabetes.com/diabetic-cat-diets.htm
I'm also assuming you're feeding the canned food, but if you're feeding the W/D dry that is far worse at 39% carbs-and what likely caused my cat's diabetes in the first place.
If you must go with a prescription food because you don't feel comfortable going against your vet's food recommendations, ask for canned Purina DM--it's the only prescription diet that is low enough in carbs for a diabetic cat.