Hey friend, welcome back. Hope you’ve been well. Your concerns are completely understandable. Any fic including crossovers; especially multiple are always hard to handle, even if you were to work on them consistently. I remember reading Perfect Elegance ages ago, and it instantly stood out to me due to your creativity and writing.
This might not be much of a consolation or help, but I’m sure there are people here willing to chip in and fill in the blanks for the various crossovers to help you save time and energy, if you were to be open for that.
Of course, the hardest part (writing) will still be on you, so it’s understandable if you still find it too time-consuming. It’s important to focus on your own life and self first and foremost. In any case, I wish you all the best in the future.