I feed quite a variety, maybe too much so: Fancy Feast (LC/no gluten ones, only 2 of these can the renal kitties eat), Friskies Special Diet (LC & low phosphate-turkey & giblets, beef & chicken, beef & liver, sometimes salmon), and Wellness (LC/low P-chicken, turkey, beef/chicken). I have 2 renal kitties so I try to combine the FD & CRD needs. Perhaps I have too much variety. My other kitties are picky, Lanky eats just about anything. All suggestion gladly accepted.
Tonight I fed Wellness turkey formula mixed with a little Fancy Feast tender beef & liver feast. I've been thinking the Wellness is what's affecting Lanky's BG. Maybe I should really narrow the food selection & try to figure this out. See how after dinner of Wellness, BG went up to 406 @ +2 (but I don't know if that is significantly higher).