I take 240 mg of Geodon right before I go to bed without food and sleep like the dead. I wake up feeling well rested. It does increase its effectiveness if you take it with food. I've never experienced any side effects with this med even from the beginning.
I don't know what to advise you. I can understand your predicament. Years ago, I started seroquel (new to me at the time) 2 days before I started a new job. I was so sedated I completely slept through the 2nd day of my new job! They thought I quit. Fortunately, they worked with me.
I don't know if what you're experiencing is hypo or med but I wish you the best of luck. I hope everything goes smoothly for you next week.