My suggestion is that I hope you Author will employ other writers to make side contents and stories while you focused on the main contents. Fenoxo the creator of TiTS and Savin the creator of CoC2 are the prime example for this. Their game thrives for many years because they let their community make its ideas and stories come into life in the game.
Of course, you can't just employ anyone, maybe make a writing competition in your discord centered around the Silent Echos story, and employ who you fancy. Or let the community make stories related to the Silent Echo game and maybe you can get some inspiration to be put in the game. And if you can draw some inspiration regarding their stories that you put in the game, then you should always give credit by citing their names, in that way, they will have appreciation for their stories and will be encouraged to make more contents and stories.
Author, I hope you will take kindly my suggestion.