You'll just want to get in the habit of watering with a nute solution at correct p
H for your soil. So if your soil tends to go low, it should be 6.8. If it tends to go high, it should be 6.5 (these are the high low values for being in range). This way, all pots should stay in range. If you see problems on an individual plant, you can deal with it on a case by case basis but now you should be much more stable. Do not let the plants becoem rootbound because then soil chemistry is MUCH harder to control.