mother feminized seed

So growing out these variety of seeds for mothers. Currently under a 400W MH and in 1/2 gallon pots. Seeing as the colour is still ideal and nice and green I feel no pressure for first nutrient feed. Any recommendations very welcome. Expanding my knowledge open to all.

Trying to find some information online about this but so far I haven’t been able to wondering if it’s a bad idea to start a mother from A feminized seed... Wondering if it be better to get normal seeds and then sex them and then revert the female back to its vegetative state after Sexing or...