A bit of a dillema

[knapkinfish]

Ok, so I'm going to be awake from 5:00am Wednesday morning, until 10:00 Saturday morning, with the only sleep time available being between 5:00pm and 9:00pm between those times.  Sleep seems to be handled well enough... but figuring out when and how much to eat during that period is complicated at best.  I'm constantly hungry, but quite sedentary due to the nature of my 2 jobs right now, and I'm trying to avoid gaining weight (I can pretty much give up trying to LOSE weight until this is over).

Any ideas?