Lots of good points above! We can offer more help once we know what kind of setup you have. That will give us more info to help you reduce the snake's stress and get the little one eating well.
Otherwise....once he sheds... if it has been 4 or more days since his last force feed, you can try offering him a fuzzy mouse. I would avoid jumping directly to the small adult mice for the next two meals as you want to avoid a regurge after being fed so little as a meal.
Sometimes these little guys can be very fussy as well. So you may need to try something like a live fuzzy and then after a few live meals try some of the hairdryer tricks to switch back to frozen/thaw meal.