Welcome, Excellent looking Viv. And for my 2 cents, Get rid of the sand full stop, regardless of calci-sand. At that young it can be a very serious problem. Use newspaper or kitchen towels until the beardy is a little bigger. Save you alot of heartache if that lil dude dies from impaction.
I just lost a baby Leopard Gecko because its previous owner kept it on sand, it was too late for that one.