You might like to know, there's been a lot of new information coming out lately concerning raising baby Sulcatas. All evidence points toward keeping them dry (i.e. on a hay substrate) actually causing the all too common failure to thrive issues in Sullie (and Leopard tort) hatchlings/juveniles, as well as, naturally, pyramiding... Where keeping them humid (humid substrate, frequent mistings) and very hydrated (via a good water dish, daily soaks) appears to greatly increase survivability and even overall health, as noticeable through a lack of pyramiding (shell deformation); fast, healthy growth; and overall robustness and activity of the animal(s).
It's definitely something that I'd recommend the OP, or any other poster here with young Sulcatas, to do more research about. Whether or not you decide to follow the advice, at least look into it so you know all your options and the reasoning behind them.
Some good reading to start you off...
http://www.tortoiseforum.org/Thread-...#axzz1GSUqFMMp http://www.tortoiseforum.org/Thread-...#axzz1GSUqFMMp
You may notice both of these are started by the same person. Keep in mind this method has the backing of an entire forum of life-long tortoise keepers and breeders, and the "hot and humid" method has been used with great success for a great many hatchling and juvenile Sulcatas and Leopards, among others, kept by forum members who've been following this care method at least to some extent.
I won't go further into it, but I wish you luck with your Sullie and hope you take this information I've provided into consideration.