Fair feedback - It turned out to be more challenging than I thought to learn Inform AND make a game in the time I ended up having available. Lesson for me is more getting other people's eyes on it earlier to find those tricky situations and missing verbs and descriptions.
There are loads of good recipes in the Inform 7 documentation but from about halfway through the jam I ended up adapting the puzzles and scenes that I wanted to do to what I knew how to do at that point. Next game I'll experiment with a more features and get more external play testing in!
There is a (too?) subtle clue in the description of the watch for what you need to do. Hope that helps get you unstuck!