Still a bit early yet to see nitrite/nitrate. Typically it’s a 6-8 week process, and the lower you keep the ammonia levels the longer it takes (as with gravel vac’ing, will increase cycle time)
Depending on tank temp and ph levels (higher temp and higher ph makes the ammonia more toxic), 1ppm ammonia is typically safe. Even 2ppm ammonia is relatively safe if you have a ph of 7.5 or lower and the tank temp is under 80°
With my first tank I did a fish-in and kept it roughly 1ppm ammonia (up to 2ppm some days) and tank temp ~74°. It took 4 weeks to start seeing nitrites/nitrates. I don’t know if I’d recommend letting it get to 2ppm regularly, but it will help speed up the process and these were just comets that I’m growing out for the pond. So no big deal if there was a loss, but I can’t say I lost any due to water quality (some of the sickly looking ones died later on, no losses around the higher ammonia days)