I have to write at least 25 pages in the next 4 days

Before law school, the longest paper I had to write at my undergrad (other than a sloppy 20 page independent study paper) was about 8 pages. I have to produce a 200-footnote, coherent, logical and hopefully publishable 40 page Comment by the 7th. I have made significant progress, but sometimes the fear that I won't complete it on time scares the hell out of me. I woke up this morning and immediately thought, "holy sh*t, I have to find a new source for the statistics in my paper!" before I even lifted my head off the pillow.

Maybe I need more sleep, or I just need to get this paper done!