Brother, I am going to give you some advice. It is not the kind of thing you want to hear, or what you want to do, but I am firmly convinced that you should do this.
I think you should leave the hospital for a little while and eat something and go to sleep. I know you want to be right there with your wife and daughter. That is natural.
I agree with Bubba. At the very least: get outside, get some fresh air, get some good coffee. Just clear your head for a bit.
The advice to get some sleep away from the hospital room is good advice, but if I'm in your shoes, I don't think I would take it, either.
Right now, I'm praying more for mom and dad. Y'all are going to need it.