That's a part of educating the women. But only a part. Family planning isn't much good in the absence of women being educated and thereby empowered so they can take greater control over their lives.

Interestingly, Iran has a very good family planning program, that the government and the Mullahs themselves are responsible for. Which is probably one of the reasons for their low birth rate. And despite the stereotypes we have in the West about women in Iran, they are very well educated and very empowered, which no doubt also accounts for the low birth rate.