At 41/2 months, they are still growing (I wean at around 3 months), so it shouldn't be too hard to get them in shape.
I have never used clovite, so I can't comment on that one. I do know the calf manna will put the correct condition on them fairly quickly.
If you can feel bones, that means they do have the potential to grow to a normal size.
Yep, for your does, you can't let them get overweight, so we restrict, but you can't have them being in bones either,...LOL. I have a few overweight does and it happens to the ones that I wait to breed. They gain weight in a hurry between 6-12 months if you let them.
Yes, as cheap as it is to feed one, starving one is just ridiculous!!