Congrats, Mom!
I haven't started fertilizing them yet as I'm not seeing any true leaves on them. They are planted in an organic seed mix which looks like it may have a few nutrients in it as opposed to regular seed starting mix. They still haven't put on much growth but I'm really hesitant to mess with them - might end up losing them. If we had any decent sunshine I'd stick them in a window but since it's been cloudy just about every day, grow lights will have to do.