Hey tooth,
dont worry to much, teagan also had the same thing when we left hospital, her levels went from 67 to 224 in 24 hours, and continued rising over a period of 3 days till it was 290, and then it started coming down.
They told me to feed her as much as possible, because the more she feeds the more she will pass fluids and make bowel movements, and the jaundice will go away.
Also as Tulip said, lay her on the bed or in the cot by the window with just a diaper on, natural sunlight is very good for them.