>>I’m working on a story plotted by Elizabeth Barrette called ‘the Case of the Conterfeit Enchantments’. <<

*squee*

>> I’m going to have to learn to write when I have a chance, rather than knowing exactly when I’m going to have time to do things.<<

I suggest experimenting with different coping mechanisms for that. One writer friend's method involves keeping all the materials for a book in a binder, which is easy to grab and work on anywhere. When I was in college, I used to scribble notes and scene sketches in the backs of my notebooks between classes and in the classes where I already knew the material.