I'm definitely starting to think the prognosis for Charles isn't very good and perhaps he's only been given a certain amount of time left to live.
William looked like he was about to break down a few weeks ago in that footage of him standing/ swaying while the national anthem was sung. To me, it looked like he was close to tears and perhaps struggling not only with the news about his father not having long left, but also the fact he thought it might be about 10 years before he became king and now he's suddenly faced with the reality that it's going to be very soon. I don't think he wants it at all, let alone when his kids are still young and his wife is ill.