Thank you! I was able to speak to my vet once they opened at 8 am and he recommend to test 30 min after feeding and give the 2U if it was over 200. When I tested again after eating, he was really high so I gave the shot. My vet said he wanted to see how my cat did on Vetsulin at 2U before switching to Lantus so I am hoping to get him switched over to Lantus in the near future.