Phew, I think this one is a bit too hard for me. X3 I'm not too good at juggling this stuff in my head under pressure. But I love the concept. I'd probably do better if there was less time pressure on the shrinking, but I get the sense that might be part of the appeal. It certainly would be if this was about one of my kinks, I think. X3
I do find that there's something cathartic about mixing and making things like this, so it's something I'd be interested to see expanded on.