I’ve been doing a lot in Z-A. First, I started by completing all the missions and side missions, then the wild zone collection challenges / mini-Pokédexes, then an almost living form dex before the DLC at the same time as the Pokédex, and then finally finished the type catching tasks and battles to complete the research.

The living form dex currently excludes Galarian Slowbro and Slowpoke, because you only get one via a trade—so it effectively needs 3 save files. Additionally, another Zygarde is needed for the 10% form / 50% form choice and also the Marine pattern Spewpa if you want to collect internal forms. Hisuian Avalugg, Sliggoo and Goodra, as well as the rest of the Vivillon lines, are also unavailable due to needing a HOME transfer (or possibly the DLC). The other possibilities could be Zygarde that doesn’t go Complete and Battle Bond and Ash- Greninja.

I am considering a second file to also store my alphas in. If I were to do that, I’d only need one more “Spicy” Galarian Slowpoke.