Yeah, things have slowed down recently. I talk about it in the latest Devlog, where I explain in a bit more detail why I can't give a good estimate for when Ch.1 is finished.
To give current context, I've been sick this past week. So since that post went up, not much progress was made in writing/programming.
I also don't want this to go on for too long, but for now I'll have to see and post another update when there's noteworthy progress