I syringe fed him this evening, but he'd hardly take it. The little guy was smart enough to wipe it off his mouth.
We also completely overhauled the enclosure - added tile flooring, a hide box with moss, and even a new plant and a red heat lamp since he's nocturnal.
But, he's hardly moving. He explored only a few inches and then collapsed, shutting his eyes asleep again. He sleeps a lot.
At least with the tile flooring, we can see if he's passing food. I hope he hasn't gone beyond the point of no return with his liver and kidneys shutting down.
Keep your fingers crossed!