Nitrogen deficiency in early flower....

So I'm just 3 1/2 weeks since flip with a new strain to me and my plant is showing a slight nitrogen deficiency. Typically I'm not bothered by this at all but usually it starts a week or two later with other runs/strains I've done. My initial thoughts are to not worry about it but it seems to be a bit early on. Any thoughts on this? Should I even try to make any adjustments at this point? The stretch is over and the plant is currently in full flower mode. Also theres some slight nutrient burn so im not real excided about boosing any nutes. All perameters are pretty spot on otherwise. So what does everyone think? Thanks.

BTW its hydro with rockwool so a correction would be pretty easy.

looks pretty good.
what nutes? how often do you irrigate?
I run GH flora 3 part mid chart strength in 6x6 pargro.
4 weeks post flip, 3 feeds to run-off a day.

J. Rocket said:

looks pretty good.
what nutes? how often do you irrigate?
I run GH flora 3 part mid chart strength in 6x6 pargro.
4 weeks post flip, 3 feeds to run-off a day.
View attachment 5259159

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Tiny plants in 2x2 space with 4" grow-blocks
Dyna-Gro:
Pro-Tekt
Grow
Bloom
Mag-Pro

Typically 1/3 strength. Currently flooded (ebb and flow flood tray) once a day (sometimes twice) with a top flush once a week.

feed once a day and mine would be dead.
even twice would be a no go.
right now the first feed is at 7:30am for 7 minutes, about an hour after lights on.
second is at 11:30am for 5 minutes and 3rd is 4:30pm for 7 minutes, about 2 hrs before lights off.
all top drip irrigation, all feeds to run-off.

edit: approx. the last minute of each feed cycle run-off is flowing.