SO not texting back

What would you do?

My husband works hard running a business. He had an event that ended at 130am. I texted him at 430am to find out what’s going on (see below). He hasn’t responded to my last message. I hate never knowing when he’s coming home! He works in the event business. We have a 6 month old and don’t get much sleep. I’m thinking maybe he fell asleep...there’s a sleeping area at the location. I wish he at least told me when he’s coming home though but I don’t want to keep texting and call. What do i do?