Remember that there are no stupid questions if you dont know just ask. Run off colour... 1 litre of water going in (clear), catch what drains through the pot is it still clear? (my nutrients are brown so when i water and my run off colour is brown its time to flush). My girls are hanging limp and my moisture reading is 2 out of 10 before i water/feed and they are very happy. Repotting is very stressful for your plants, id get her stable before even thinking about a transplant. Your plant will die from excessive regular long term over watering as it rots the roots so i wouldnt be concerned about that at 3-4 weeks old. Listen to silent leprechaun and bury that cube just be careful not to damage the root system. Back off feeding and just water for now and see how you go. I use filtered tap water that i leave to stand for 24hrs for the chlorine to evaporate. Its still worth checking the PH
d0ct0r
ps has your soil mix got nutrients in it?