I'm not a mentor but here's some free game jam advice*: :)
Make a "safety fallback" export of your game & upload it now!
Yes, I know your game is completely unfinished.
Yes, I know your game is buggy.
Yes, I know there's more than a day before the deadline & you've got "plenty of time" to do it tomorrow.
Make a "safety fallback" export of your game & upload it now!
Yes, it seems ridiculous to upload your current version.
Yes, it seems mortifying that someone might see the current state.
Yes, it seems this third sentence is just filler for symmetry but...
Make a "safety fallback" export of your game & upload it now!
And then...
Download & test your upload on a different computer/OS version than the one you developed on.
Done that? Okay, now you can return to polishing or bug-fixing or finally picking a font & implementing your primary game loop. :D
Oh, and, then, do the same thing again tomorrow! Yes, I know there's more than 12 hours before deadline...
*Lesson first learned the hard way during 48 hour film-making competitions
& I hope that this advice can help at least one person (maybe me? :) ) avoid
an unpleasant export/upload surprise with only 24 minutes to fix and instead
have a luxurious 24 hours or more.