so far my rabbits seem to wean at about 4wks. i seperate them from mom at 5wks.
why would you want to wean any earlier? :/ to me i think it would be rather counter productive. for growing young nothin is better then moms milk.
also they dont open their eyes until almost 2wks anyhow. at 2wks they are just hoppin out of the nest and beginning to try nibbles of solids.