I took today off to take Ambush in to the vet’s. Excellent news! The vet was doing the happy dance. =) His glucose level remains within reasonable levels (189) even after one week of being off of insulin.
She said to bring him back in for a checkup every two weeks. If he stays at reasonable levels and doesn’t have any other changes (i.e., drinking too much water, weight loss), he can stay off of insulin.
She did caution me that some times cats will revert and will suddenly require insulin again. So far, though, he’s been awesome!