Hey, it's okay to let go of Yuri On Ice. I haven't let go completely because I'm still hopeful, and all the fanfictions people write keep it alive for me.
But eventually there's an end to everything. If you feel like Yuri on ice is not a big part of your life, or something you should still write fanfictions for, that's completely okay. You shouldn't feel guilty for not giving us a proper ending, because original Yuri On Ice might not even do that in the first place.
I love your writing, but it's okay to stop.