Nine women can already have babies in parallel. That is, nine women cannot have a baby in one month, but nine women can have nine babies in nine months.
Moreover if you need 1 baby a month you can absolutely stagger your initial startup period to reliably produce 1 baby a month.
14,000 women will produce a baby in a month, because that is how many, in average, it would take for one of them to be 8 months pregnant. Of course, if you need one tomorrow, you can go over to the maternity ward and steal someone's that was just delivered.