This is Day 1 using Lantus & starting with 1U. Switched from Vetsulin & was using 2.5Us. I know its super early but the jump to 339 made me curious. He did eat 3/4 of a 3oz can of his Royal Canin Gastro Diet between 6:45-8am but the 3+ was still 2 hours out from his last bite. His body was used to some significant drops after injections when he was on the Vetsulin, so I'm just not used to seeing an increase vs a decrease. Is this common?