Yeah, crunch is bad. I understand all too well that it's tempting to try and juggle everything at once, but it's not worth it. I've noticed that in my game dev work, crunching often ends up in rushed assets and decisions which I have to re-do later. It's better to take it easy, especially for health! I too have paid the price for crunch before, and it's totally not worth it.
If publishing the game in chapters feels easier to accomplish, do it! I try to make goals as easy to achieve as possible, so that they get done and don't end up in development hell. But take your time to rest now, you've earned it!