Worth keeping weaker plants?

Hey RezLife, these are totally fine to keep so far. So basically at this stage in the grow cycle most of the plant's work is happening in the root zone which you can really see, that's why most folks get impatient, but think of it this way : big roots big plants. Remember : you're watching a plant grow so it's not gonna be exciting at all times lol, hope this helps ! 🚀

as you are3 growing feminised Seeds, they all will be Girls.... and it depends waht you want to do with your plants... if you want multiple grow your girls as clones, you take the strongest as mother. Or the ones that performs best. But personally I wont give up on a plant that eraly.... Its often to see, that seeds from same package, perform different. But that has nothing to mean in this stage of grow I often had surprises, brought by " the runtz of the litter"

Checked out your diary and there's no reason to get rid of plants 3 & 4, you have to remember even though they are the same strain every plant grows differently. Honestly, they look right on schedule for 3 weeks, within the next week or two you'll notice the growth. Hopefully, I answered your question and remember Happy Growing and Free your mind one puff at a time.