Iv kept plenty of Pyxies, and still do. I would say that Grifs advice is pretty much it. If you can control the temps a degree or 2 at a time ten do it but it's not that critical. just gradually give him more day light warmth and moisture, use dechlorinated water to mist him with a few times a day.. once it's obvious that he is alert wait a few days and offer him a small meal. Earth worms would be good. hope this works let us know!
---
I am here: http://maps.google.com/maps?ll=47.669652,-117.397009