How to fill all holes were generated by Weaverbird's Loop Subdivision

Hi there,
I’m learning a lot from this forum as always. I’m appreciated such nice open community!
Here’s my question. I successfully applied curved holes surface by Weaverbird as I attached and I’d like to fill all of thier holes by concave surface.
If it’s possible it’s better to be Brep with thickness than just surface.

Hope anyone has nice idea to solve this.

Thanks,

WantToFillHoles.gh (12.9 KB)