cycling always seems arbitrary/never can tell when completed etc, never seems to work quickly but ask yourself this:
how do they get 500 reef tanks at MACNA all set up by friday, same day start, nobody stalls, nobody gets to show up more than a day or two early, no fish or corals die, and the tanks run for as long as you want to set them up?
if you apply that science to your tank here, you'll see where your cycle stands. my threads dont advocate cycle anarchy

they use what reef conventions use as the way to measure cycle completion
knowing how to make a cycle comply, and by what date, means you can take your reef to a convention and it will live...you could sell things out of it to make $$
or you could move it, across town or to another state, or begin to reef. Knowing how cycles work are your actionable options for reefing, and doubting the cycle w lock you into total inaction/miss deadlines etc.