Doe with snuffles has 3-week-old kits

My doe is sneezing more and more. At first I thought it was when she ate or drank but now. Her nose is damp and the inside of her front paws are damp. I saw yellowish discharge come from her nose. I separated her from her kits. Her 5 kits as I said are only 3 weeks old. They are eating and drinking on their own. I think I will end up culling the doe but what should I do about the babies? Do I wait for signs? These kits are to be sold in 5 weeks - so how do I know if they are sick?

Thanks