you got a lot of stretching going on put your light as close as you can 2 inches away you need to give that stem support, you have 2 options ....option 1(the lazy not great way) get a wooden dowel stick it in soil and twist tie it... option 2 repot the plant in a larger deeper pot and put soil around it and only leave an inch or 2 of stem out of the soil, the stem thats under the soil will start to form as a root system other then that looks good