I get a sulfa bolus from the vet to treat the scours as soon as they start drooping. It really helps. I've also gotten really good at tubing them with electrolytes if they won't take it from a bottle. Keeping them hydrated is key. Don't feed electrolytes with milk. Wait an hour or 2 after you give electrolytes to feed milk. Keep them warm and dry and try to keep the sick ones away from the others if possible.