I just ask, since for the most Part your coco shred substrate generally doesnt have any nutrients in it at all. (That combined with the drainage makes it a great material for a drip or Ebb flow Hydro set up. BUT if your not doing any hydro nutez the plant will have nothing to draw own to keep building itself. (Since nothing in the coco)
when the plant is a seedling it mostly draws the nutrients it needs from the seed reserve but as it gets bigger it starting looking for food in its environment. Not saying it is, but the drooping Could be plant running low on natural energy sources. I caution you about pouring on nutrients, their fragile at this stage.
I use a coco / dirt combination. allows me to mix in powered nutrients if needed For veg and bloom cycles, and still have the back up of soil for the plant to draw on.
This plant is definitely going somewhere though.