Any chance you have a link? I've been searching through your patreon for it but when I get back to 2021 it bugs out and crashes my browser haha!
edit: Ok I literally spent the last 3 hours looking for this and finally found it! To anyone else who might be interested, the reason I couldn't find it in search or by looking through the patreon archives is because it was apparently migrated over from an older archive: https://www.patreon.com/posts/old-exclusive-39018599