Governments are always offering weird wacky incentives for women to have children, when the solution is usually patently obvious: you can increase fertility by making it easy and affordable to have children. Stipends for food, paid maternity/paternity leave, free childcare services, affordable housing, and a good economy with an abundance of high-paying jobs.
I mean... there's a reason the baby boom happened in the 50s! But no, that would be socialism!!