In an interview to promote FX series Fosse/Verdon, its costume designer Mellisa Thoth talked to Deadline. She also happened to be the costume designer on I'm Thinking of Ending Things, and commented briefly on working with Charlie.

You recently reteamed with Charlie Kaufman on his latest directorial effort, I’m Thinking of Ending Things. Was that exciting for you?

Of course! What I would like to say is that I think every producer in Hollywood should give him as much money as possible to make as many films as he wants, at any time. He’s brilliant. I would collaborate with him on absolutely anything. The latest, you couldn’t call it anything but a Charlie Kaufman movie, and to me, that’s one of the highest compliments you can pay. (Source)

CAN'T WAIT.