Kishida to Offer Free University Tuition for Families with 3+ children Starting 2025
(stoppopulationdecline.org)
While I agree that this isn't exactly a cure-all, these are the types of measures governments actually need to make to reverse population decline.
Other countries aren't doing anything, China offers a one-time payment of up to 3000 bucks for each kid after the first one you make.
Basically useless.
This is a substantially larger investment in citizens enticing them to have larger families.