often when U use too much, N at the begging, and later adding PK which usually comes also with some N as well. (my pk booster NPK is 2/5/8)
so U building up N, which can result in cumulate and high acidicy in soil later and very dark and claw leaves earlier.
better feed gradually and just cal mag, some stimulant and silica at the beggining later add NPK when soil had gave up what it had.
and If U have too much N already try to flush at right pH , add only calmag. and 2nd watering add PK booster and 3rd cal mag.
probably plant will self regulate after this.