Leaves shrinking

Yes, two things, 1) looks to me like nutrient burning, and 2) far too wet. Wait until the top of the soil is dry before giving any more water - think moist, not wet. Secondly, a baby seedling at this age/size only requires a tiny bit of nutrients and not really any extra feeding during the firs 7-10 at a minimum and seeing as how you are growing in soil, the soil should have more than enough nutrition in it already that your plant can use for 2-3 weeks, without any extra food. When you do start feeding your baby, go easy until she is growing branches, quarter strength will be plenty strong enough for her fist few feedings. Hope this helps... Organoman.

Overwatering +/- too much nutrients for a young seedling. Let that soil dry out before you apply another watering. Those single blade leaves won’t even matter in one weeks time. Everything looks fine knowing you’ve overwatered. Good luck