Hi, My Husband Was Feeling Very Tired And Fatigue. He's

Hi, my husband was feeling very tired and fatigue. He's 52 and has cirrhosis but yesterday and today is feeling way more tired then normal. He hasn't eaten anything except a bowl of fruit earlier because he felt constipated. He's been asleep the majority of the day but now when he got up to use the restroom he seems to be acting drunk, and refuses to eat or drink anything, what can this be, can his sugar be low? What should I do?