Yes, and it's not working, birthrates are still declining. The one factor that more than anything triggers declining birthrates are the level of education among women.
We're going to have to adjust to smaller populations, unless we wish to devolve as a society.
The economics is a sizeable part of the issue. Fix - or preferably replace - the economy so that it's super affordable+rewarding to have and raise children. And make it more acceptable socially to start a family from late teen years (when fertility is just about already at peak).
That is sadly also true, hence my "or devolve as a society". Educating girls, and young women, results in fewer children, but it also yield richer and honestly better societies. You'd struggle to find a rich, first world country, where women don't receive proper education, but it's almost universally true for poor and dysfunctional countries.
We're going to have to adjust to smaller populations, unless we wish to devolve as a society.