I already rewatched the first season before watching Season 2 because I was starting on Season 2 late and I'd forgotten a lot.
The main thing I'm confused on now is Neolution, Season 3 ended with a revelation that they've been behind everything but I thought they were always supposed to be anyway.
I assume I've been misunderstanding it, I thought Neolution was always being presented as a big part of the conspiracy and Dyad but I guess it was meant to seem like a smaller branch of science that wasn't too heavily involved (hence this reveal being an apparently big twist)?