I'm a big fan of natalism but I don't think this is the best policy. A few broader principles that I think would work:
1- Any benefits whether they be cash, tax breaks, etc MUST be tied to married couples.
2- Young women must be disincentivized out of the work force. Very controversial but single income households are extremely difficult to establish and maintain even though they are absolutely essential to raising TFR.
3- No fault divorce needs to be curtailed or eliminated. The amount of social destruction this has caused is incalculable.
4- Something must be done about widespread artificial contraception, especially the BC pill. Religious opposition aside, which is correct btw, there is no way that persistent BC pill use isn't doing enormous damage to women's health and fertility. I'm convinced that it's a major contributing factor, along with women waiting until they're older, to the widespread fertility issues we are seeing among women who are trying to conceive.
All that said, I'm not too proud to turn down free cash for kids I was going to have anyway haha.
The flames of the Imperium burn brightly in the hearts of men repulsed by degenerate modernity. Souls aflame with love of goodness, truth, beauty, justice, and order.