You could try a speed reading course. There are some great techniques for skim-reading & getting straight to the important bits.
I'm working full-time & doing 2 units of a Masters (online, 10 week blocks). It's pretty mental, but I just take it one week at a time. With text chapters, I usually read the "summary" or "key concepts" page first, then only read the bits I don't know enough about already. With journal articles, I read the abstract & conclusion, then read in more detail if essential for an assignment. Then it's just a matter of picking key quotes to drop into the assignment. If you're doing your reading electronically you can copy & paste relevant bits of info into Word as you go. This approach works quite well for me.
Don't be afraid to ask for extensions either.
EDIT: I just realised this is a few months old!
"...dreaming of a belly full of life..."