Clients not communicating after birth

I am in a program where we contract with a hospital and do on call shifts. You don’t meet the clients beforehand. You just show up if you are requested. The problem I am having is that when I go to check in with the client at least 24 hrs after the birth, they do not respond. I don’t want to be pushy but get the sense that they just want me for the birth which is fine. How many times would you follow up before you moved on?