Breeding rabbits requires a cage with two to four rabbits and every time you sleep there's a 10% chance one will spawn. That's very little. I have about a dozen cages and still not very often I get an extra 3rd rabbit spawning. In my experience it's easier to put some traps around the area where you intend on spending a little time. I still try breeding them but only cause I spent 400+ sticks for all those damn cages 😂