Here is what I would try:

Your substrate looks a bit on the dry side so you may want to increase the moisture content. The enclosure may be a bit too large for the animal so a smaller temporary enclosure until it puts on more size may help.

These guys are active and on the hunt in the evening and your little guy may be a bit shy due to his size. Wait until nightfall and have some dusted crix ready. Once you see the little guy on the prowl then drop in the crix. Take account of the crix and do a recount the next morning. Remove any uneaten crix as they may stress the animal further. Depending on how many are eaten, he/she may not eat again for an extra day or two. Repeat until your animal begins feeding regularly and then you can start experimenting with other prey items.

This worked with my little one and it was a bit shy initially and would not eat while I looked on. But after a few trials it has become a bit bolder...just hammered a fuzzy mouse right as I dropped it in there tonight. Once yours gets started, I am sure you will have no further issues.

Hope this helps!!!