No photos of week 3, i was full of work and wasn't even in town to take pictures, so far both plants seems to be growing fine. In the begining one of them had a bit of decoloration, even that it stills that plant is the biggest one of all the plants i have right now :D
I would say yes give her a very light feeding and see how she responds. Maybe adjust your light she looks a lil stretchy maybe farther or closer see what she likes