Well. A baby plant need no too much take care. Just be careful whit the watering one or two time a week will be god. Look in the soil if is dry need water. Look that when you watering the soil turns more heavy be cause is moist whit the water, so when the soil turns light need water. DO NOT USE NUTES. If you use good soil in a 3-4L pot will provide good fud for 3 or 4 weeks. I like to go whit no nutes for the vegetative stage. always use water whit 6.5 ph. About your lights just try to put the lights a distanse to no burn the leaves try differents positions until you are happy. I always use the lights to more close possible to plants. Saludos.