You are right Cindy. The feed that most of my local feeders use, has a very high amino acid profile, cleated minerals, yeast, extremly high vit leval. .
The company build rations from a biological rumen function. Most lower end feeds are bare bines and least cost. This feed as well as honor is a locked formula.
I would have thought Honor would have all the goodies in it,but if you are seeing a response, it must be working.
Dons suggestions also may work.
I have seen lambs refuse to eat corn if used to a texturized feed. And some sort.
Lots of ways to increase intake, but need to start sooner than later, and the fussy eaters, will be much easier to mess up.