Sitter Need For 3 Small Kids

We are looking for on-call/emergency care for 3 kiddos (ages 3. 5, 2, and nearly 1 - all boys) for when my fiance goes into labor. The boys are great sleepers (they do best with white noise playing, but all 3 sleep through the night) and well behaved. Our middle kiddo, L , is diagnosed autistic and currently non-speaking, but is a happy and content little guy. She is technically due 12/1, but is measuring ahead (39 weeks) as of today and could give birth at any time. We unfortunately do not have any local friends/family that we can contact when she goes into labor and trust with our little guys as we make this transition to a family of 6. We plan to stay at the hospital for the minimum time (24 hours after delivery if mom and baby are healthy