But if you stop feeding the good bacteria they'll die off, so keep after feeding them
I prefer to use fishfood for it, because then thats what they good use to, if that makes sense...
Once it gets closer to being more stable, feel free to find STRONG fish to add in to help cycle it some more. when starting up brand new filters/tanks always always go slow and safe when adding in fish.
Have you already planted the tank? if you are... I assume you are since you seemed to infer that you have ADA soil.
If you have not started planting, do that also. Again start with the hardiest plants and work your way up.
How often have you been doing wc? don't do 50% randomly. when cycling like this try to do 20% EVERY DAY. Even once the fish are in, stick to 20% everyday, and slowly work it down to 20% every other day. then every 3 days, then down to 1 time a week.
I know this seems like it gets expensive on water treatments, but if you get Prime you'll be golden.
keep us posted