Seems there's a cheat map already available on the creator's patreon but it sadly costs double the game's price at 50 dollars.
Viewing post in Any Walkthrough?
It's not really a complete walkthrough yet, it just tells you what day the CGs appear. So no actual help in the choices yet. I bet the creator will release the complete thing soon at a much cheaper price or maybe even free. The patreon subscription I'm talking about also includes other stuff like mini games and other patreon exclusives so I think it's pretty fair.