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.