Just a note to all the people with zero time, you can do it.
A few people in my flight and I had absolutely no time before we arrived to IFS and we made it through. You just have to be aware that during the week you aren't going to television or Facebook much, if at all.
We were either in the flight room studying the local flying procedures, drawing out our profiles, or chair flying the hell out of our profiles in the cockpit trainer. That's the biggest thing you should be doing, chair flying. I chair flew (ie simulated flying) more hours than I actually flew, but that's what gets you proficient. As well, make sure you chair fly the pattern and all the required maneuvers.
Oh and be a hardass when you're critiquing your buddy that's chair flying as the student. You aren't doing him any favors by letting him forget things that his IP will ding him on.