All I came up was pay for services instead of income for children. Imagine the minimum income for children was diverted into services. So the government buys

All I came up was pay for services instead of income for children. Imagine the minimum income for children was diverted into services. So the government buys free clothes, school breakfasts+lunches, and medical insurance. This decreases the cost for a poor family to raise a child which allows you to give less money per child, and reduces the incentives for child farming.