Alright, so presumable since you're dosing 2ppm of ammonia, you're converting ~2ppm of nitrIte. If you skip dosing, which I would today, you *should* zero out your nitrite, and continue being able to convert 2ppm in <24 hours.
I don't think it's a deficiency, but it might not hurt to add a little more phosphates from either a few drops of pH down or some more fish food.