I think it's because the scope of the story has grown like crazy, and he has all these ideas he'd love to implement and share, but he can't even take the first step in a constructive manner.
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Building the story, introducing new characters, continuing character development, making lewds bigger and bigger, everything involving the rework, trying and failing to fix the pacing, all of it. He can't figure out an effective way to prioritize and just DO the work. So he gets stuck in his head, feeling busy but doing fuck all.
And this is taking everything he says at face value