My Kaja came to me as a little over 2.5 inches.
* I kept her humidity high, and fed her all she'd eat, twice a week.
* Keep an eye out for fuzzy white stuff, called mold. If you see it, clean the enclosure out. (Although, it has been postulated that it isn't harmful) I'd rather err on the side of conservatism.
* Keep an eye out for tiny white bugs. These are mites, which are a major prob for high humidity species.
Hope this helps..