What did Rueben say he had simply gone and adjusted to instead of being concerned about?

Rueben has simply adjusted to his father's condition.... his weight loss and sickly appearance.

Skinny didn’t say it. His very bones seemed loose-joined. And instead of being concerned about this, I'd simply gone and adjusted to it. Once he popped out of bed I just figured he was his old self, and if he looked a little more gristly than before, why, wasn’t gristle what a man wanted anyway?