How old, what size is he/she? If its an adult, they do go off feed sometimes during breeding season. Other than that, check out the care sheets on this site. See how your sankes care matches up. Often when a snake goes off feed, its a husbandry issue. Did you change prey items? Is it colder than normal. I wouldn't bother him until you get him to eat. Other than cleaning and water..no holding. Two weeks without eating is nothing at all to worry about.