Happy to, and I'm glad!
I always over-scope my jam games, so I've started coming up with my "I would like to do this" idea and then selecting 1 mechanic at a time, starting with the fundamental ones like movement if that's involved, then to the ones I don't know how to do yet. I never meet the scope of my original idea, but with this approach by the last few days it is pretty clear to me which mechanics get cut and what needs to be finished up to make it more game-like, and leaving things I know to do for last makes it more likely I know how much time I'll need to finish them.