Hello Terri,

Feel between a rock and a hard place? Mark has offered very sound advice. It's important that you connect with him in a way most people don't.
Make the effort to find out what stage and treatment options are aviable to him. He will need a primary caregiver as this treatment is no walk in the park. Is there anyone who you can count on to help with his care?
Ask alot of questions and use the search engine on this website to research just about anything related to oral cancer. You'll have plenty of questions the further into treatment he gets.

My best wishes to you and your Dad.

Danny Boy