Is it maybe something like he's beginning to outgrow the habitat or hides? When my young snakes start changing behavior and getting antsy and pushing like that, it's usually time for an upgrade.
I would probably do what KMG said and wait it out. If your baby had been eating fine, there's no concern in waiting another 5-7 days. The more you stress about making him eat, the more he will stress and not want to eat.
For later on...Unless you're just running through the last of some frozen you had on hand, I would consider moving them to one prey item of appropriate size. Typically this means rats. Ball pythons can get stuck on one type of food and working out multiple prey items to an adult weekly can be frustrating.