With your stats the way they are, you don't need to do anything at the moment. Most people find that it takes longer for the nitrites to go down than the ammonia. Don't be suprised if it takes more than double the ammount of time it took for the ammonia to go down..
...because the Nitrite busting bacteria take longer to 'reproduce' / 'double' / whatever you call it, than the Ammonia busting bacteria. Twice as long I think.
Oh OK...I'll just wait then, thanks for the info...however it means even MORE waiting