Get some sleep! This was my second Jame Gam solo, and if there's one thing I learned from the first one, its: If you're crunching, you overscoped. The first one I participated in, I did the same as you. I started Friday @ 5:30~ and submitted Sunday like 3 mins before deadline, about 4:50 something. I slept about 10 hours in that time span. Not healthy!
I went into this one trying to have a healthy relationship with the work! I accomplished what I wanted, but I did have to cut some features that would have made it better. I originally wanted there to be upgrades every night you rested. I couldn't do that, I wanted to make my own music, and I also ran out of time for a tutorial. All of those were pretty important to me. However overall, these game jams are about learning! Going to play yours after I finish typing this.
Get some rest, even completing a game jam is celebration worthy!