Joey was diagnosed 3/6/17.
Instructions given from the vet for 1 unit Lantus twice daily.
Since 3/10/17 Joey has been on wet food, mostly Fancy Feast and some Friskies (thank you so much for the amazing food list here!!), twice daily with some dry kibble out just in case (he's always been a dry food grazer). The dry food is Nature's Variety Instinct Grain-Free Dry Cat Food - Chicken Meal Formula. I've researched and have found carb value around 12%, so while I'm working on getting a sample of Young Again Zero, this is probably an improvement from his Purina weight control dry kibble he was eating... He hasn't been eating much of the new dry kibble at all except the past 2 days he's been eating his Fancy Feast can within an hour (which is faster than he had been) and since he was diagnosed and we switched to wet food, I am seeing my old, happy, ornery Joey again. I can tell just from the food change alone he's feeling a bit better!
Finally got it all to post! Yay!