Small snakes usually feed easily. They will not feed if the cannot digest their food (temps too low or too high) if the feel insecure (something might get them) hide boxes changed and or over head cover. Or they are sick. This is why the information has been requested to sort of which one or combination it is.

A photograph would help.

The warm side temps,

cool side temps (surface of the substrate under the hides)

and the ambient air temps (the air circulating inside the enclosure).

Is the snake doing or behaving oddly? (aside from shedding) I have little snakes that shed every other week maybe even every ten days they grow very fast. If you have a scale take the weight of your snakes and if it is little (sub 500 gm) I'd take it weekly while it is not eating. Weight loss and gain are important to gauge how serious what is going on.