In case anyone in the same position finds this post later, I got called to come in two days after my original waitlist date. They called at 5am so they’re not kidding when they say keep your phone on you at all times.
Yes I was a few years ago and came off the waitlist quickly. One thing that surprised me was Sibley called me the morning of my scheduled induction to tell me they were pushing me back a day because they didn’t have any beds - I guess too many showed up in labor that day, or more likely, they were short staffed. So keep that in mind - nothing is set in stone with induction appointments!