A solution to this problem that the devs would also probably give is: do another playthrough! Try getting some of those achievements you missed the first time. Replaying also makes some lines richer, especially after you've known what they allude/refer to. Hearing poetry and Asterion's early dreams and musings again was enjoyable. If you want to get through the game quickly, there's a fast-forward button at the top left. It automatically stops when you encounter new dialogue too. Handy! If you're interested, the speedrunner route is expressly endorsed to be suited for second playthroughs. They've injected exclusive hilarious bits in there-- all the more reason to see it, yeah?
However, if you only want to see only the daily agenda content, the quickest way I can think of is for you to reload an earlier save with more days remaining. Voila! Finally enough days to finish that lengthy Asterion's project while I try to get Robert to stay guest content you want. While doing this, any achievements you get will persist even if you reload to an earlier time without finishing that playthrough. Abuse the almighty save-reload system in visual novels! Mwahahahaha!