You have a lot on your mind, and being far away from your father and the medical is hard. It IS easy to get scared and carried away with information you find on the internet.

I think almost all of us on this chat board have found that until you learn more from the doctors, or,find out the results of the next test, etc. it is so easy to be driven crazy with wondering or fear.

I'll offer a couple of my thoughts in case it helps. Let your dad recover. It has not yet been 1 month since his surgery, his body has gone through a lot. His body needs time to heal and recover. I know everyone's experience is different, but at 41 years and in good health prior to cancer surgery, I had an 11 day hospital stay, a tracheome, could'nt speak for a while. I was totally wiped out for a long time after surgery. Your dad, at 76 and with other medical problems WILL take longer to recover//bounce back.
In another message I think you mentioned that he wasn't doing anything or interested in anything. Well, with recovery - difficulty breathing, eating, talking, walking, every movement can hurt or be such an effort. I remember being in the hospital bed, or being home and having family ask what they could do or get for me and I was so lethargic and out of it that I didn't care to watch TV or to read. try NOT to worry so much about the inactivity.

I find that it helps to think about what IS going right, or to focus on the progress made recently, rather than comparing things to life before the treatment.

Radiation and chemo can be tough - keep asking the doctors how they think your father will handle those with his other medical conditions. It sounds as though you have found a way to communicate with the medical team and I am sure that is a great benefit to your family.

Hang in there! You certainly have been through a lot.