AsNoriuanswered grow question 3 years ago pH too low for soil !!!
6.3 is minimum, 6.4 is maximum
Its aftermath, now magnesium is in lockout.
Could be first Calcium issues, that will lockout rest ...
Phed dechlorinated water, good watering regime ( water only when pot light, even if she stop drinking, you have to wait)
In a week I would add 0.5 ml of CalMag for few more waterings.
Later would return to feed.
I suspect they have too many goodies stored in those pots and it is all wet and with wrong pH.