I would let the nitrite drop first.  There's no rush to adding more ammonia.  Generally at this point you'd be adding a 'snack' dose every 3-4 days.  That would mean adding just to get it up to 1ppm rather than the 3ppm that is the original dose (normally).  
 
In your case, you don't need to worry about a ton more.  Just wait 4 days... then dose back up to 1ppm.  Wait 4 more days... and repeat.  Eventually your nitrite will reach zero after 24 hours.  When that happens, you are done.   
 
 
I would suspect that it won't be too long.  Maybe 2 more weeks, at the most.