Misunderstood.

Yes I would go with the coconut oil or the olive oil, neither will hurt if licked.

It could be mites in the bedding. It could be stress form the delivery. Really any number of things.

I'd go with the coconut oil and it if gets worse I would maybe get it tested.

I'd wean the pups as soon as possible if it is something that will hurt them.

Best of luck.

EWO