Almost done treatment, BUT

Hi, My dad (72) is in week 7(final week) of his treatment.  Last week they decided to stop chemo because his platelets are too low and he was experiencing severe paleness and fatigue. He is missing week 6 and 7 of that. ( i don not know if they plan to give it to him once his blood counts are back up). As for the radiation, the first 4-5 weeks seemed to go well but last week he started losing more weight bc he couldn't drink the boost. stopped drinking enough water and was feeling absolutely horrible. Yesterday he ended up at the hospital dehydrated. (we are only going on info that his wife is giving us because he was pretty adament he didn't want us around for the 7 weeks....I think bc he was worried about us being upset, I don't really know his reasoning but we are trying to respect that, it is REALLY difficult). He was given iv hydration yesterday, the doctors do not want him to have a feeding tube unless absolutely dire need, I'm not sure, maybe for infection reasons?), they gave him a double radiation yesterday bc Sept 4 was Labour Day in Canada and I guess they don't do treatments on holidays, which I find absolutely shocking. They wanted him to make that up next Monday but it sounds like he said NO and would prefer to double up on one day. They also started him on antibiotics bc he had a bit of a fever. Anyway, they made arrangements with the home nurse to come everyday for the next 2 weeks to hydrate him. We thought, ok, we are almost through this. Last night his wife called and said that he spiked a really big fever and she took him to emerg and he was admitted. Is the fever something that usually happens around this time in treatment? Or does that mean things are going really bad?  We want to run to the hospital but also know that will upset him, as he really doessn't want us seeing him like this...it is heartbreaking really bc ultimately it is causing us more worries by being in the dark...Anyway, I don't really know what to do. His wife said last night that if they say he is staying in longer than yes we should just come, she will know more today. I don't want to piss him off but I also want to see my dad...is the fever common? 

Update- his wife just called and he is admitted now for however long. they think he has an infection but dont know where it is. Could be throat, not chest, as they did xrays. They said no more radiation at this point. I am going today to see him, bc well he is my dad and I want to see him.