How to secluded points from the pressure

I’m trying to mimic the yas hotel top part
my issue is the pressure is applied on the mesh with the same value so i am ending with a weird shape and what i am trying to do is to separate the pressure in order to have the first part curvy ( like a dome ) while maintaining the middle part drooped down and the two end corners curvy

Asrar_5-9 (1).gh (129.3 KB)
Untitled.3dm (267.6 KB)