My dad, who’s 83, has just had 33 days adjuvant radiotherapy to his neck. He did well during the treatment but now is feeling very tired and sleeping most of the day. He Isn’t feeling unwell just tired and a little depressed. Is this normal? Also, he lost his taste 4 weeks in and now struggles with taste. He can manage soup and yoghurt. Will his taste slowly return? Any advise greatly appreciated.