Nice looking plants. They will fatten up more as you go along. The girls are at least two weeks away from even considering to harvest more like three. The one plant is showing signs of a slight need for little calmag. Watch your watering schedule. Not to wet , need healthy roots to the end.
Plants as they grow need different things at different times. One plant may be thirstier than another one may be a different need for different nutrients. It is just something you will learn as you go along. It will be easier to notice different needs before they become problematic but it just takes doing it over and over until you get the hang of it. And you will.