1. Make Childcare unaffordable.
THere isn't really much you can do about this.
Childcare in the UK is extremely labour intensive due to the regulations about required ratios of children to adults.
Labour is expensive and is only becoming more so.
ATtempting to subsidise your way out of this reality is not sustainable - someone has to pay for it in the end!
You need to somehow hugely increase the productivity of childcare systems.
Tax Credits don't really help in this situation, because they don't solve the fundamental economic reality!
You take money from the working-age people to give it back to them, it achieves nothing.
You have to build a tonne more housing, secure the energy supply to reduce energy costs and then probably attempt to squeeze productivity gains out of transport and automation. In the long run it probably means the virtual death of most remaining "conventional" retail.