All I can say is, bless you for caring so much, for your Morgan, and for Mr. Jennings!

Just a thought (and I know NOTHING about diabetic cats): can you only keep the kitty in a separate room at feeding times? I have 8 cats, one is on a prescription food due to severe food allergies. He goes in a bedroom, the door gets closed. Then I put out all the food, going in to put his down as well. I set the timer for 15 minutes. Once the cats finish, I feed the dogs. Pick up all the food. Go in and pick his up last. Bobby now KNOWS when it is feeding time and goes into the sewing room and sits waiting!

You made it sound as though you have food out all the time, as in 'free feeding." So I just was wondering if this would work for your situation.