First of all, there's a good chance that he's NEVER eaten and he was brought in as a CH import.

That being said, they are not too difficult to get started under the right conditions.

First of all, a 28qt container is HUGE for a hatchling...15 qt max, 8-10 qt is ideal. They need tight spaces when they are small to feel safe.

Second, a lot of hatchlings won't go on to f/t right away. Try a live hopper sized mouse and stay away from mouse pinks in the future...they are more or less a worthless prey item even for a baby ball python.

I wouldn't focus too much on the stool until he gets some real food in him.

Also...keep handling to a minimum. Matter of fact, I wouldn't hold him at all until you see him eat - I know that's hard to do with a new pet - but he's not going to eat unless he feels safe and stress-free.