I relied on my faith. Point blank. I'm not trying to get preachy here but, when people compliment me or my wife on how "strong" we were; we weren't. We were complete train wrecks.
Prayer, coffee, more prayer, even more coffee and every once and a while, sleep.
Hospitals suck. I didn't used to dislike them because I worked in one for many years. Now, I get anxious just thinking about them.
Get and accept help from people who are offering. I didn't eat for three days before my parents literally made me. It's not like I was doing it on purpose, I just wasn't focused on anything other than my little girl. I was focused on too many other things. I needed someone to show me "hey...you look like death on a cracker, maybe you need help..."
It's not weakness bro. It's generosity. Accept it from others and give it back when you can.