As everyone else said, slow movements. Raising alk will help drop your calcium, as well as just allowing the corals to consume it. You can find a dosage calculator for most brands, many will either tell you x amount over y days, OR tell you a lump sum to dose which you can divvy up over a few days yourself.Thank you. What the preferred way to nudge up alkalinity?
Have you checked the levels your salt mixes at? A lot of brands mix at high calcium, I've never bothered with trying to lower mine. Consumption will do it over time and my salt brand just runs high to begin with so any time I perform a water change I'm raising it again anyway. (I don't do a lot of water changes). On that note, my salt brand also mixes at a lower alk than I actually run my tank so I do have to dose that before adding new water to level it out. Definitely important to test a fresh batch and know what to expect.
I don't test phos or nitrate unless I get a random algae bloom. I don't normally even test calcium to be honest, but I added a lot of corals recently and noticed a growth spurt in my clam and stunner so I checked and had to dose extra. I usually just let my doser run and clock my numbers on calcium and magnesium when I do ICPs and do minor adjustments as needed.