Is there something about the Fediverse that would prevent you from moving your community off Reddit? It seems pretty clear that people will try Reddit alternatives even before their favourite subreddits have moved. Users are engaged with the communities that you have built and loyal to the 3rd party app developers and we don’t give a fuck about Reddit as an organisation.
I don't currently moderate on reddit, but I can tell you that the larger subs I used to moderate will likely not be moving to lemmy in the foreseeable future. The moderation tools currently available for lemmy are extremely limited compared to what you get with reddit and the toolbox extension. What lemmy has now is okay for smaller communities of up to maybe a few thousand subscribers, but I think the level of spam and trolling you'd see with even tens of thousands would be completely unmanageable with the tools currently available, let alone any more than that.
A troll impersonating Ruud did so.
The real Ruud: https://lemmy.world/u/ruud
The banned troll: https://lemmy.world/u/ruuud