I’m currently in the process of rewriting my Classic story into Limelight, and what keeps me going is my desire to see the story played out in its best version possible. I’m adding every single trick I know into the story and I’m just so excited to finish it and see how much better it is.
And that’s kind of my advice right there.
If you’re unmotivated or feel like pushing it back, don’t force yourself to write it. You should not feel obligated to do it just because readers are waiting. And if it really is something you want to do and want to publish, then just work on it as you feel like it and as you have the desire. Otherwise if you force yourself to work on it and publish before you’re ready, you could end up disliking it after having such high hopes. 