It doesn’t get any easier Tang. After the two list of verbs in Season 3, you have な and い adjectives plus adverbs to learn in Season 4. I’ve just began Season 5 and the workload has tripled compared to previous seasons. Don’t let that deter though. Once you plough away at it, it all comes together nicely and the feeling of completing a chapter is immense.
I do agree about the dip part. I think if an alternate way could be thought of so there isn’t so much vocab to learn at once and rather spread over so many pages or whatever, then it would be less discouraging for some people.