It does seem like a long time between diagnosis and a meeting with a specialist. I wouldn't have been as patient only because my husband had lost so much weight and couldn't swallow anything when he was diagnosed. The oncologist should be able to explain the stage of the disease, possible treatments and what treatments work together and they shoud take into consideration your Dad's overall health.
My husband was diagnosed with stage IV EC October 2005 at the age of 48. I have been his advocate and caregiver since then. Someone who knows your father well needs to be an advocate for him. I am not a medical expert but I have followed up every suggested treatment with my own research, looked for clinical trials and said no to things that I knew my husband couldn't physically tolerate.
The importance of someone advocating for your Dad who knows him well and how he is really feeling is that when he tells the doctor he is doing fine and at home you know he is really feeling sick or uncomfortable you can give the doctor your observations about pain, food intake and overall comfort.
Your Dad may be different and be upfront about how he feels but he still needs someone to take down the information and review it with him again so he knows what his treatment plan is. I go to every appointment and procedure. If I didn't there would have been things missed and some mistakes made by medical staff who were not familiar with his case.
I am sorry your Dad has to go through this, he is lucky to have family to help him. I hope things go ok on Tuesday.
KatyB