Hello!
It doesn't sound like you are doing anything wrong. Are your fish happy and healthy? Cycling takes a while...I believe it was about 6 weeks before my most recent tank was cycled, and I cycled it with a couple danios. You may be slowing it down with the daily water changes. The good bacteria needs a source of food (ammonia), and if you are removing it daily, then it will take awhile for the good bacteria to populate. You should start to see a rise in Nitrites soon, the Nitrates should follow. Maybe you could do an every other day water change, as long as your fish are able to tolerate the ammonia....check your paramaters and make sure the ammonia isn't off the charts, if you decide to do that....
Don't give up! Next to fish getting sick, I think cycling a tank is one of the worst parts of fish keeping.
Hope this helps.
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* Hi Liz,* It really sounds like things are comming along fine.* Your fish are healthy?* I think I would feed them more than every other day.* That will produce more waste, and as you have already read, the beneficial bacteria need the ammonia to live.* I feed my fish three times a day, just as much as they will clean up in 3 minutes.* With this rule to guide you it just depends on the fish in the tank to tell you how much to feed.* *I vary the kind of food.* One feeding is flake and floating pellets, one is sinking algae wafers, shrimp pellets, the last is frozen brine shrimp and bloodworms.* *But then I have a wide variety of fish that have different feeding needs.* * 
Frustrating? Yeah, but what can ya do.... It's the price we pay to have a healthy happy aquarium.