hi my mum has gone through stages with both eating & drinking , at first she had no appetite & we was struggling to get her to eat anything all of a sudden she had decided the foods that she loved she no longer did & had never done !! we tried explaining that she needed to eat for the amount of medication she was on. sometimes it worked . the next stage was forgetting to eat we had to keep reminding her to eat & that it was her food in front of her. sometimes still do now or even put the food on the fork for her were now going into a stage where shes hungry all the time to the point shes waking my dad at silly o clock through the night saying shes hungry & that she wants ice cream or a biscuit . of course hes got up to get her a biscuit otherwise she wont settle . but ive found that it is stages of things they may go through & dont last long. aslong as your dads healthy & happy id see how he goes . is he on any medication that increases appetite ? just a thought
keep your chin up i know thats easier said than done at times !! x