it doesn't look like you have enough ammonia to keep the cycle going. Once you see nitrite start to climb, you still need to keep ammonia levels at 3ppm so there's enough food to keep the bacteria colonies thriving.
Once you can bring ammonia to 3ppm, and the next day both ammonia and nitrite are 0ppm, that's when you're close...within a few days of beign done. At this stage a nitrate test should reveal lots of nitrates.