Taking it day by day is all we can do.
I hope your treatments are successful so you can soon say you're a cancer survivor. :-)
Oops! My bad. I should've said "survivor". I finished chemo and radiation last year, and I'm doing very well. So, I'm an example of someone who finished some very strong chemo, and I'm doing fine. Just make sure your dad eats! That's very important.
Prayers offered up for those in treatment.