I can only say this again and again. Don't play it like that. Just enjoy it without hunting for one specific scene for hours. Just keep playing and most of the scenes and events will "just happen". There is absolutely no need to grind all the girl's stats to max levels. The requirements will be added to all scenes,events and appointments eventually. But you can already see that you don't need super high stats for most of them.
The next version will have a lot more quests, meaning also guidance on what to do next for Amy. After that, the gameplay for one girl after the other will be changed that way.
If you want to use cheats, use
companion mod from niceerotica, which is also linked on the OP of this thread.
It should be pretty save to use without breaking the game.