GCP Billing Integration for Antigravity IDE

Here’s what I’m after: Antigravity IDE should be billed from a GCP project, and not my personal Workspace account. I have tried every guideline I could find, but haven't succeeded getting in to work yet.

I have spend full days, not getting the IDE it to work and I am running out of quota resulting in a one week wait to get back on to using the Google models.

Deliverables:
• Video call where we sort things out

I would like to hear from you if you have the exact experience with this, or an alternative way for me to work.