From Semafor, October 28:
The News
The world’s two most populous countries are now grappling with demographic challenges. India’s population growth rate has slowed, and the heads of two states in the country’s south — where the fertility rate has sharply dropped — recently urged families to have more children. Leaders are concerned that slowing population growth in southern India could lead to less representation in the federal legislature....
...MORE
The embedded link to India Inside Out has a lot of detail and a bit of chart mania.
https://rohanvenkat.substack.com/p/ageing-south-india-and-a-census-delimitation