Hang in there Kim. You're doing everything right, i.e., vaporizer, Nutrical if they stop eating, etc. What you might want to do to make sure they getting enough fluids is to give them water via a syringe. Even if it's only 1-2 syringe fulls each. This way you'll know they're getting fluids.

BTW, sleeping is their systems way of healing. If their eyes and nose get ooky, just take a warm, wet facecloth and clean them out. It might even help them breath better. Another thing you can do is run the shower as hot as possible and put the kittens in there. It'll break up any congestion they might have.

This too shall pass. I'm here if ya need me, as well as everyone here.