Couple of tips for you, but first, how many ways is that light?
1) The light is too close for the size the plants are.
2) those pots suck. Pull the bottoms off and use plant saucers. Those pots are designed to hold water in the bottoms. So even a little water sticks around a long time. Especially with plants that small.
3) use the lift method to know when you need to water. After you water them lift them to feel how heavy they are. When they are dry and the leaves just start to wilt a little, pick them up again. This will let you feel the difference between a light/dry pot and a fully saturated pot.
Hope this helps.
Good luck and happy growing.