It has eaten so it wont starve anytime soon. Once meds are done, offer food like i stated and do so at night time. And leave it over night if needed if the snake dont eat right away.
If after 2 atempts and still no go on eatign, then you will want to pre kill the mouse and assist feed it.
TO assist feed grab the snake just behind the head, supporting the body. Use the mouses head to work along the snakes mouth till it opens its mouth. Then once open put the mouse in to the back of throat. The snake should bite down almost immediately and begin eating/constricting.