https://www.felinediabetes.com/FDMB/threads/10-10-cozmo-amps-217-6-306-pmps-305.254138/#post-2864226 So I thought they my vial of lantus was losing potency, and I ordered pens from Marks, (which aren't here yet.) But maybe the vial is ok? I have no idea what happened as we were doing great and then all of a sudden it was like the insulin wasn't doing anything. And I went back up to his highest dose of 1 unit 2x a day. Then after a couple days of 1 unit he threw me these greens. I'm thinking I should probably still swap the vial for the pen when it arrives. But will be worried about it being stronger. ♡♡♡ thank you to everyone for your help and reassurance.