Really enjoyed it, it reminded me of DDLC. Though I probably wouldn’t have gone for the secret ending(s) if it were any more tedious.
Other than some of the already recommended fixes, maybe an interesting way around this issue would be to lean more into the Tamagochi inspiration and have some secondary activities (e.g. feeding the Otomo) that also provide stat points. If they increase the bars slower than events, but are more predictable, then you are introducing a risk-vs-reward element while also providing a bit of gameplay variety.
But really, any way of making it so you don’t have to memorize (or write down) all answers to get a specific ending would be appreciated. And even without that, I liked it a lot!