If you aren't there yet, you aren't there yet. As an alternative, write about pretty much what you posted above. Explore your fears and anxieties about even thinking about doing the homework. It's kind of like when my students are free writing and they don't know what to write about. I tell them to write about not knowing what to write about and go from there. They actually end up with interesting and insightful pieces that way. They surprise even themselves.