Nitrogen deficiency questions with photos

Hi all.

I have what appears to be nitrogen deficie
ncy in my strawberry cough plants. Yesterday at noon, i gave them a watering with double the veg nutes and some cal mag later in the day.

My question is, what will happen when the plants are no longer deficient? Will the pale green leaves get darker? Or will only the new leaves look healthy? How long will it take for the plants color to respond and correct?

One of the photos has a healthier plant next to the deficient one for comparisons sake.

Thanks peeps!

Im normally able to get a bit of the colour back when i have a deficiency and normally a good week to 10 days, but i guess it depends on the plant

Looks more like magnesium deficiency than nitrogen as nitrogen usually affects the bottom leaves first

Thanks yall for your answers. Looking lower on the plant, thoae leaves are in fact pretty yellow. Im glad to hear the leaves will snap back in a week or so. Cheers!