Overpopulation is when too many populations disrupt the balance of the environment. Everything will be maintained if the population balance is in control. Population can be brought under control without any population decline through lifestyle changes. Demographics can be applied to a specific nation or the entire world if countries think carefully.
Anything extra in the world is harmful be it nectar. So we can get rid of it by applying a little awareness. As I have seen earlier my grandmother used to cook curry and when the amount of salt in the curry was high, she used to leave a few leaves of malabar spinach in the curry for some time. And after a while he would remove the leaves from the curry to reduce the saltiness a bit. Similarly when the population of a country increases if the people of the country can be converted into public resources then I believe that the problem of population growth can be solved.