I have just seen your post, but better late.....
I finished my 6 doses of Docetaxel about 8 weeks ago. The first problem I had was constipation which started on the first dose- I found that the Laxido they then prescribed worked very well if I took a sachet 2 days before the chemoand continued to 2 or 3 days after.
Make sure he takes his temperature regularly, I used an ear thermometer which only takes seconds; take it at least morning, noon and night- one night mine was 38.5C - I was rushed into hospital for 5 days but no long term effects as I got into hospital quickly.
My taste was more affected than I expected- the only hot drink that tasted OK was Bovril! Cottage pie always tasted good and so did fish pie- most other things I fancied didn't taste as good as I hoped. Filtered water was OK or add a very little lemon barley to tap water.
I felt very tired but tried to get some exercise each day- I bought an exercise bike and did some walking on the level. It has taken two months to start feeling a bit stronger.
I hope your Dad's treatment goes well.
Best wishes, Gromit