And stop giving CalMag, with such low pH, plant could not uptake it right or some other nutrion blocked uptake of it, here you have problem...
But while girl was not consuming all food, leftovers were still in medium, I think you have more than enough, just bring good pH back to pot. Drying out and watering only then with good pH should sort future issues and normalise pH in pot.
Leaves won't return, but won't be going worse ...
Nice grow btw !!!
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