I would first confirm a strong solid interest in tenants that would want daycare services and would be willing to pay a premium on a property that had a daycare. If you can’t demonstrate that then it begs the question of why put forth the effort to put it up n place. So many things are done as an idea without data to back up if it is a good idea.
Maybe reach out to foundation communities for advise or to be pointed in the right direction. They provide services such as this and are hugely successful in Austin.
I would definitely go through the state, in order to ensure proper licensing and insurance. The property owner may also be required or encouraged to carry additional liability insurance. This is a great amenity to offer your residents, and even teammembers. I'm interested to see how it works out for you.