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You don't want to be doing water changes until your initial cycle is complete. The water changes will just slow down the cycle. Until both Ammonia and Nitrite are reading zero, your Nitrate reading is pretty much useless as the Nitrites will skew the results. What you are trying to do is to build up two different types of bacterial populations, one that converts Ammonia to Nitrite, and a second that converts Nitrite to Nitrate. Reducing the Ammonia or Nitrite through water changes just makes it take longer to build up a sufficient bacterial population. Once the Ammonia and Nitrite go to zero, and return to zero shortly after adding more Ammonia to the system, usually with something like Ammonium Chloride today, your tank is cycled. Then a water change will reduce the Nitrates that have built up in the tank.
Once the tank is cycled you can add non-bacterial life to the tank but do it in small amounts as each new inhabitant will increase the tanks bio-load and the bacterial population needs time to grow to match the new bio-load.