Scheduling a Hoag Newport Maternity Tour

Hi friends, wanted to know if anyone had any tips and tricks to schedule a maternity tour at Hoag Newport. I've been trying to snag one on their website, which is what our doctor suggested, with no luck - it seems like they fill up very fast. And to top it all off, their website is very confusing to navigate, as there's no way to filter out just the maternity tours.

https://www.hoag.org/resources/classes-events/?category=maternity-ob-education%7Ceducation

Does anyone have tips or tricks for how to get in, or does anyone know exactly when the new tour dates are posited? This is our first kid, so we're learning as we go.

Thanks!