its difficult when anskae goes off food to not start worrying but honestly i have had a snake go 10 months without eating then just up an start back like it was nothing.
Sometimes they take aphase in their life when they decide ok i'm good for now an they wont eat or they are tryin to tell you its time for a meal change- ie, larger prey, diffrent prey etc.keep an eye on his body condition, long as hes not doing what i call pyromiding (where when you look down form teh top they look /\ instead of round) or when youy run your hand down the spine you feel teh indiviudal ridges i wouldn;t honestly worry to awful much.
Also i wouldn;t try alota things back to back, if you offer a rat an he doesn't take it then wait a week or two then try again with something else maybe a diffrent size or species.
btw fo rteh aslepn thing i dun realy recomend keeping rtb on aspen due to their humdiity requirements if you were gona switch substrate i'd call for cypress mulch thats only if you were gona change it though ^^. paper towls an newspaper arejust fine though
