>>126252896With the very loose history surrounding Themiscyra, I would say they don't. Not getting into the entire history, WW's mom, Hippolyta, born of Ares and Otrera, at one point might have been in a relationship with Hades, meaning the actual figures from the age they are depicted in, about 3000 years ago, but is still alive, and relatively young. I would bet that Themiscyra might vastly slow down, or even stop, the aging of its inhabitants, probably from the gods spell to high the island. WW would thus be the youngest Amazon, but probably something like a couple hundred or thousand years old.
So, Amazons do not reproduce, they do not age, thus have no need to reproduce.
They also would likely no have enough diversity in genetics to survive ~3000 years of interbreeding with only the couple hundred Amazons left.