How Should We Proceed?

[Kaybreh Mathis]

Hello! My husband and I are set to close on 17 units tomorrow. I've been after them for the longest time to send me copies of leases and contact info for the tenants. I just received leases today, and most of them are expired and tenants are in month to month. So technically, they could all vacate tomorrow and I'd be stuck paying a mortgage with no rental income. Is it possible to bump back our closing date until I get some tenants to sign leases? How would you proceed from here? We're first timers and looking for advice!