Melissa,
I would look at the focus questions on the front of each unit and
spend you time answering those, ignoring lessons that you don't think
get you to those answers. If they can answer those questions (and you
might need to scaffold and rewrite for your students) they have met
ALL content expectations, but with emphasis on some more than others
(there are some that only take small chunks of time and others that
take days and days...)