Second baby what to do with the first?

So I'm due feb 15th my 4 year old son does not have school the 15th and 16th I have no idea how to plan for what to do with him when his sister decides to come out. I am a planned and have high anxiety and not knowing exactly when she will come makes me nervous! We have a little support but not much when it comes to like having him go to a family members house everybody works. Did anyone have the older sibling stay at Gr hospital? Did your hubby not go because he had to stay? What did you do?