Leaves are lower. Lack of water?

I would forego any additional nutes while in seedling. This assumes you are using a seedling specific soil to get her started. IMO, If using any quality soil, you can wait for at least 4 weeks, before you start to feed.

Plants have a natural day-cycle, much like we humans do. They know when you usually turn the lights on and off, so they prepare themselves for night time by "drooping". If you look at them in the morning before you turn on the lights, you'll see they have perked up and are ready for another day's work :)

Hey Buddy :-) there is a very simple trick when you give water. Let it dry nicely, then lift the pot up and remember how easy it is. Then pour it and lift the pot back up and notice how heavy it is now. The next time you water, you will only do it again if the pot is as light as when you started. As a pure beginner, you can also use a scale and note the weight ፦). Keep carrying as before 👍 Your plant is beautiful

It looks fine to me. Keep it up and be careful not to over-water.