That is the place. They were able to get permits to harvest and export a small number of tadpoles through a Canadian dealer called Understory Enterprises, and in return they are given half of the sale price to help fund the work on the reserve.
They shouldn't take that long, maybe your water is not warm enough. Mine started to morph at around 4 months, and my friend who originally bred them keeps his much warmer and they normally morph between 1 and 2 months for him.