There are too many infinitives to learn at once.
Why not split it up more over the entire course. It's not like we're gonna use ALL of them immediately.
I don't think there are too many; for me it's more that there is no structure to them, and that makes the chapter a bit overwhelming.
I'd like to see the chapter emphasise more the four main conjugation families, and the irregular verbs.
By learning the infinitives strongly /by family/, I believe it would feel less like being hit by a wall of verbs..
I think that the same thing could be said for adverbs, good suggestion.
Here's a flashcard deck that I did to help: https://tiny.cards/decks/713a051b-cc5f-4a65-b603-c7a93ab7e6dd