Thanks so much for your prayers and concern! We've been through an emotional rollercoaster so it's been difficult to post, but I'll try to summarize:
After my dad came home and had those convulsions that I mentioned in my last post, he had a case of delirium (it's a condition you go into when there's not enough sodium in your system) which led to him having quite a fever, and his blood pressure fell dramatically. It was all really scary, it looked like we were going to loose him. He was going in and out of consciousness. He ended up being taken again to the hospital, but thankfully he didn't go to the original hospital he was treated at (which he hated), he was taken to a much better hospital this time. He had to stay there for about two weeks until they could bring him back to normal (it wasn't just lack of sodium, he was also lacking a whole bunch of hormones which they had to replace, and that took time).
Anyway, he came back home and was getting better until we had another scare. He had a sudden fall a few days ago and hit his head on the ground and had to go back to the hospital for a few days until they could tell that there was no significant damage done to his brain (he had some bleeding, but thankfully it stopped). Thank God, he is home now, and seems to be getting better for good. He's being super careful not to have any more falls now.
I don't know when he will feel well enough to post again. We are taking things very slowly. But I'll be sure to tell him of your concern and prayers! Thanks so much!