What I did to keep me sane was do enough water changes to keep my nitrate below 5ppm. This meant that I could see from day to day how much nitrite was processing, plus if you're only adding 2ppm of ammonia on each dose, the nitrite shouldn't be above 5ppm anyway). It's also the case that if the nitrite gets too high you can end up growing the "wrong" type of bacteria (I'll leave the sciency explanation to someone else) so it's a good idea to do.
Have you been keeping a record of your readings? Alot of people like to start threads on here to use as journals so they can keep track and get advice from other members.