The third week also went pretty well. Growth has accelerated significantly. On day 19, I reduced the light intensity again as the plant still looked a little stressed. The smell is slowly intensifying and is somewhat lemony.
I might defoliate the plant at the beginning of next week, but I'm not sure yet.
These are the days on which I watered (pH between 6.2-6.5):
Day 17: 250ml with the nutrients mentioned above
Day 18: 400ml water
Day 20: 400ml water