SO Leave Time

Polly • I am a 37-year-old counselor. My husband and I are approaching our 10-year wedding anniversary and this is our 1st baby
12 days overdue and I was really hoping to meet Baby today. As it turns out, none of my attempts to induce labor naturally have yielded anything but false labor (0 dilated). Can't wait much longer, but concerned about SO. I asked him to start his leave today, but now I feel bad since there's no clear sign that labor is on its way.
I'm curious what everyone else's plan for SO leave time is (when it begins, ends, etc).