I’ve been feeding or mixing in some “raw green tripe” for years. Raw tripe now but years ago I fed canned tripe. Even a small amount in one meal per day might help and decreasing the amount of kibble.
You might also try crumbling up a nugget or two of a freeze dried raw food such as Primal Freeze Dried if you do not like raw frozen. It’s pricey per pound so just a few pieces will do. Bone matter helps to make formed stool. There are several brands of raw foods (frozen, dehydrated and freeze dried) to choose from.
Primal also had frozen grinds (meat and bone) and frozen mixes (meat/bone/some veg) in small chubs.
Sometimes, just decreasing the amount of food helps.
