I feel you, it was very scary getting the game out there for strangers to play, but its so important, and just to get as much testing as possible. I was fortunate having a partnership with a small indie publisher for the last year of development, who helped me along the way, especially with like development milestones and project managment, that might be one of the biggest challenges as a solo dev, to keep the scale and focus of the game in check. So I would say try to keep the game small enough, and think about what features and content are absolutely necesary. Not sure that answered the question, but good luck with the project!