Thats excellent news!!! Im so glad your father is doing so well.
Hang in there, there are still a few bad weeks coming before it gets easier. Unfortunately radiation gets progressively harder as time goes on, even after its over it continues to work which makes it rough for the patient.
I was struggling to eat thru out my treatments. I began eating again about 3 weeks after finishing. Canned peaches and chicken and stars soup were easy foods for me. Here is a list that will help your father with his eating.
Easy to Eat Foods List