We’re lost

How does anyone do this? It’s day 9. The last two nights he has refused to sleep. I change him, She feeds him, I try to burp him (how do you know when you’re done?) he continues to cry for no discernible reason until it’s time to try the cycle over again. I’ve gotten maybe 2 hours of sleep per 24 hours for 13 days straight including 5 nights at the hospital. How do you get through this?