Rabbits sleep on average of 8 hours which is the minimum amount of sleep that the rabbit needs as an adult rabbit.
However baby rabbits may sleep up to 10 hours or sometimes less.
It depends on the rabbit and whether it's a baby rabbit or adult rabbit but they do sleep usually at least 8 hours or 8 and half hours as an adult rabbit and as a baby rabbit from 10 to 10 and half hours.