How do I appeal my financial aid award after a sudden reduction in my parent's income mid-semester?

I am a sophomore biology major currently struggling to cover my tuition bill due to my father's unexpected layoff last month. I have already reviewed the university's financial aid guide, but the instructions for a 'Professional Judgment' appeal seem contradictory regarding the required tax documentation. I am worried about meeting the upcoming registrar's payment deadline. Could someone clarify which specific forms are mandatory for an income adjustment request?