My dad used to have a reoccurring illness when I was in school. At those times, I would practically lose concentration in class and in many other things. Family is so dear, we must always value that relationship and give it our best. As you've requested, I will be praying for you.
Your story also reminds me of my dad and when he was critically ill. I was little then but I knew something wasn't right with him. At some point I wouldn't bother and anlt some point I would just sit and stare ,lost in space . It's really difficult and so I understand how that feels but all we need donis stay strong and ask for God's grace to endure.