National Geographic covers some efforts to restore Axolotl populations in natural habitat

Published in January of 2022, this article on axolotl conservation happenings, says somewhere from 50-1000 axolotls are living in the wild. The government of Mexico designated 520 acres as protected axolotl habitat in 1993, and the founder of a brewery with his team recently released eleven mating pairs of Axolotl in ponds on a university campus. The article also tells about efforts to bring back an ancient farming technique which provides habitat for axolotl.