King Charles has definitely been ahead of the curve with his ideas regarding the environment. I remember when he was mocked for his ideas which have now become mainstream. KC has lived a full life, has a profound sense of duty and Harry does recognise that. He knows his Dad is busy too. He stated that recently.
I don’t believe in playing the cancer card indefinitely though. We don’t know that information or even if he is still receiving treatment. He has definitely lost weight and needs to keep his strength up as he is an older gentleman. He should receive support from his family which I believe he has. William and Kate, Edward and Sophie and Anne have been marvels for the Monarchy and he has rewarded Prince Edward with the Edinburgh Dukedom for his lifetime. That was one of the best things to do. Another smart move was appointing David Beckham as his ambassador for his foundation.
KC just needs to sort - publicly - his relations with Harry and squash all the ‘snubbing’ rumours. My guess is he will do something, again, when the time is right regarding Harry. I’ve no doubt he loves his son and vice versa.