It looks like the Pipevine Swallowtail Caterpillars will survive and won’t run out of food. They found almost every small piece of Pipevine (Fimbriata type) and I only see one of them still eating. I found 3 of them near the roof of the house. Two of them already converted to Chrysalis, and the other should turn tomorrow.
I’m going to guess I may not see too many more Pipevine Swallowtail at least for a little while since my Host sources are so low. I guess they could fly by for some of the nectar plants.