Snakes absorb a lot of yolk from the mother when they're born, some can go a month or two and even longer without food if they wanted to, though you never stated how old your snake was, he ate on 6/18. He's fine if he doesn't eat, as long as you don't notice him losing weight and his scales start to loosen. Like Joe stated, let him alone for about a week to settle into his new environment, lower the temps down a bit because 88 is too high for a corn. DO NOT try to feed anything lower then 3 days apart as it will really stress your snake out.