So, I haven't been grinding as hard as my first couple of Jams (this is my third now), but the experience has made it a much better experience over all. I know how to plan my days pretty well, know when I want various targets hit and know as well that having an MVP ready at about the halfway point is important :) At this time, I have my game play elements done and I believe pretty much ALL the scripting done other than tweaks now. It's just content (about 3 minutes more) and polish :)
Word of caution to everyone here, though it's been mentioned in other threads, make sure you have something ready to submit at least a few hours (preferably a day even) in advance of of the deadline. You never know what might happen. Case and point, building WebGL in Unity 2020 is a bit different than previous versions as I encountered yesterday and today and I really want a playable WebGL build :)