Cycling question for my 20g tank?

Ok ive Been cycling my tank for over a month with fish now and today the ammonia dropped to zero. The nitrite, however, is at like 5ppm. My question to you is, should I do a water change or ride it out because I hear the less water changes the better? I have 1 fish and it's hardy as heck considering how I havnt changed the water in like 3 weeks. Will it stall the cycling process or should I just wait till it drops to 0ppm?