Here is a link for fish less cycling https://www.fishforums.net/threads/cycling-your-new-fresh-water-tank-read-this-first.421488/
It will be a little different with the fish you already have in there. The fish you have are producing the ammonia so you dont have to add it. Fish-in cycle sometimes takes longer because you must do daily water changes to keep the ammonia at 0. This is why you need a test kit.
So what you would do is test the water. If the ammonia or nitrite is above 0 you would do a 50-75% water change to lower it back to 0. Do this daily. Ammonia and nitrite is toxic to fish.
Eventually the beneficial bacteria will form and it will eat your ammonia. At this point you will only have to do weekly water changes of 50%
It will be a little different with the fish you already have in there. The fish you have are producing the ammonia so you dont have to add it. Fish-in cycle sometimes takes longer because you must do daily water changes to keep the ammonia at 0. This is why you need a test kit.
So what you would do is test the water. If the ammonia or nitrite is above 0 you would do a 50-75% water change to lower it back to 0. Do this daily. Ammonia and nitrite is toxic to fish.
Eventually the beneficial bacteria will form and it will eat your ammonia. At this point you will only have to do weekly water changes of 50%