Not so much a question, as a couple of comments. One is of course a hearty thank you to the devs who've put so much work into creating something like this. Long ago I was an avid Usenetter, and while Reddit replicates a lot of the feel of Usenet its underlying structure is tragically centralized and closed. Lemmy feels a lot more like the Usenet of old and I would be very happy seeing it take off.
The other is: you've got a month left to iron out as many kinks as possible. :) The real flood isn't going to start until Reddit actually shuts off those APIs, because humans are lazy and I bet most just clicked through the announcement their third-party app gave them and figured they'd worry about it later. I've seen threads on Reddit where there was a lot of odd negativity about Lemmy and a lot of it seemed to come down to a confusing interface or stylistic complaints, those seem like things that can be addressed in a hurry and might be worth focusing on. I'm brand new here myself so I'll see if I can spot some to comment about more specifically in the future, but I'm sure you've got a backlog with that sort of thing in it anyway.
And if Reddit ultimately bans NSFW content, as they keep seeming to be edging towards, the flood will become a deluge. But that will likely be a separate phase of their enshittification process than the API thing, so who knows when that will be.