https://tvline.com/2021/12/23/and-just-like-that-episode-4-stanford-moves-tokyo-willie-garson-final-episode/

"We had to put some patch to explain his absence," says Michael Patrick King of this week's episode, which bid farewell to the late actor and his character. He added that Garson "was supposed to be in all 10 episodes.”

Sarah Jessica Parker was the only And Just Like That cast member who knew Willie Garson was sick (https://people.com/tv/sarah-jessica-parker-was-only-ajlt-castmember-who-knew-willie-garson-was-sick-he-was-in-pain/)

In And Just Like That... The Documentary, Parker detailed the strength Garson had during his cancer battle. "If he could've stayed one more day, two more hours, three more weeks, he would've summoned the strength and pushed away the terrible pain that he was in. I mean like pain, like physical pain," she says. "God, I can't believe I can't call Willie. I cannot believe I can't call him. I just can't believe it. And he would always tell me that he was the most popular character on the show — and he was not making a joke. He was quite serious. I was like, 'If you say so!' Turned out, he might've been right." ALSO: The documentary reveals Che Diaz wasn't originally Miranda's love interest (https://www.thedailybeast.com/and-just-like-that-documentary-reveals-che-diaz-wasnt-originally-mirandas-love-interest).

And Just Like That had big plans for Stanford Blatch before Willie Garson's death (https://www.eonline.com/news/1318379/and-just-like-that-s-original-plans-for-willie-garson-s-stanford-blatch-revealed)

"Before I knew that Willie was sick and couldn't complete it, Stanford was going to have a midlife crisis," AJLT creator Michael Patrick King tells Variety (https://variety.com/2022/tv/news/and-just-like-that-more-seasons-michael-patrick-king-1235168146/). "Stanford's character always had a borderline career as a manager, and we were like going to explore the fact that it wasn't a real career. It was going to be Carrie and him, feeling the shifts."