Seriously you need to feed your snake. These are the things you can do to help it , if not take it to a pet store or vet right away cuz that's too long.
check heat and humidity in tank
check water source
shedding schedules
change from frozen to live immediately it might not like that source of food and might want to kill it first
try feeding it mice instead of rats
try feeding it a bigger/smaller size food depending
try feeding it in different locations until successful
feed it in a dark place/container.
feed it on the bed on a towel
feed it outside or inside its cage and leave it along
so many things can be wrong that you could potentially change to help your snake.
last result would be force feeding it food to live.
Also all my snakes it rats so they can either eat mice or rats. I've met many breeders at expos and they start there snakes off on mice then switch to rats for more calcium and protein.