Hi Keleigh - You've found the right place for all the latest information on oral cancer plus some very knowledgeable and compassionate people to provide support and helpful suggestions. I'm so sorry to hear about your father's diagnosis. Has he been treated at a CCC (Comprehensive Cancer Center)? It is really important to have a doctor who specializes in treating oral cancer patients so that your father can receive the best care possible. Until the appointment on Wednesday, do check out the main pages of this forum starting with the diagnosis section which could help you think of a list of questions to ask the doctor:
http://www.oralcancerfoundation.org/discovery-diagnosis/

It helps too, if your father has other people go with him to the appointment to help remember what was said. I'm sure others will be along with more suggestions who may have experience that more closely resembles that of your father. Hope things go well on Wednesday.