Yes, agree with all the others. The most common problem a beginner in a new Fish-In cycling situation has is hesitancy. The beginner usually worries that the water changes are somehow dangerous or that if too many water changes are performed that the bacteria won't grow or won't grow fast enough in the biomedia of the filter.
Neither of these is true. To the fish, having ammonia or nitrite(NO2) above 0.25ppm is a major stress, potententially significantly worse than even a somewhat poorly performed water change. The bacteria, meanwhile, will continue to grow and expand their biofilms even if our test kits measure zero ppm ammonia. This is because even in a perfectly working aquarium, there is a constant flow of ammonia and oxygen, down at a low level, to the bacteria despite the level not being high enough for our kits to respond.
So the goal in Fish-In cycling is to get those toxins going back and forth between zero ppm (right after a water change) and 0.25ppm (at their height later in the day (or the next day) right before you do the next water change. For some Fish-In cyclers, this means they can go a couple days before the next water change but in your case I suspect the combination of a slightly underperforming filter (possibly, not really known of course) and having added what clearly is a larger fish stocking than one would normally for a fish-in cycle, you may initially have to perform quite a few large water changes.
The good news though is that if you do do several of these, often it will taper off and you will need fewer to maintain it and all the while, the filter bacteria are growing and helping you in your task more and more. You of course are experiencing why, for beginners, a fish-in cycle is a difficult and not recommended situation, as compared to a fishless.
Hang in there and keep us informed!
~~waterdrop~~