My daughter is a college student and if she drops below fulltime, she loses some types of her financial aid (not proportionally, but the whole amount). For example, she has a scholarship that requires her to be a fulltime student. If you're not sure about your aid, check with your financial aid office. Can you tell the professor about not having enough money to buy the supplies? Maybe he/she will be able to direct you to campus resources for this type of situation. Hope you can see a counselor. It's so hard to lose so much sleep. Hope you can get some rest.