I've shown you how the community is failing minors who achieve the age of majority after reproducing. At the time majority age is reached, youth have not achieved any earnings as adults, yet they are expected to act as adults, specifically financially and/or socially.
I don't know how to change this because I have learned from the people who implemented the systems responsible for past cases. I have read that teen birth rates are down. The smoking age is 21 in
California. That doesn't mean that nicotine addicts who are 20 years old will stop smoking, as the new law is phased in. Similarly, reproductive freedom should be adjusted gradually by conscious effort without controlling or eugenics.
The fact that this is such a touchy subject means that you will not find instantaneous awakenings of people who suddenly decide on a range of dates in the future to conceive. When you're 18 you don't know what you will be doing at age 36. Ironically, a lack of decision making skills leading to a pregnancy causes a comparable lack of autonomy (free self decision). Having a child limits your activities, even if it opens new opportunities.
So in short, are you asking me how to change a limiting factor of young people who partake in the responsibilities of parenting?
What do you not understand about the part in bold? It seems like you are looking for something in particular and I am open to suggestions. However, if you review the links I provided I think you will find it answers your question.
Automatic Emancipation of Minors - FindLaw