Ok. Got red cell in him. Picked up Corid. I am feeding him and took up his water so that when I put his water down he will drink a good amount. I have loose minerals in his pen so he can get some when he wants. I plan on giving him some crushed B & iron in some yogurt in a little while. I don't want to overwhelm his system all at once. He still seems pretty weak but is in good spirits.
The Red Cell and Vitamin B should boost his energy.
And the CoRid should make a difference within 24 hours if it's coccidia.
I usually dump a bottle of pedialyte in their drinking water at times like this too.