Well--I bought Nico my male over the winter and starred at a mound of dirt for months ---I thought he was dead a couple of times. I mean I really was wracking my head as a new owner wanted to interact with my animal. I then out of pure annoyance bought Rocco, the female because I asked for a female who was awake.
You can get the animal anytime you want---just be prepared some tegus do not respond to temp changes articfical in nature---some are on a biological clock--espcially argentine BWs.
There are always exceptions though. He hatched out in August most likely--still pretty small. You'll be shocked at how fast he will grow
