Has growth stopped?

Overall I agree with that Creepy_Steve says, but I would also add that this early on the plant takes up most of it water through the leaves as the roots aren’t properly developed yet. So 60% RH(humidity) is fine, but it’s on the lower end of the spectrum. If you can increase the humidity to 70-80% during the seedling stage(until you have 3 nodes), I think you will see some quicker growth. If you don’t have a humidifier you can use, one easy way is to make your own “humidity dome” by covering them with like a cut-off plastic bottle with some small holes for some air exchange. But overall they look healthy in the photos 🙏

you shoudl water the same way each time.. wait for a particular weight of pot or dryness up top and saturate the entire thing. this will not stunt a plant. the plant looks fine. i bet it's growing. it just seems slow the first few nodes. once it has some big floppy leaves it'll grow faster. stop doting :P it's fine. it's just a weed. it looks healthy. as far as light intensity.. make sure the nodes start to space out a little bit -- no extreme stretching, but you also don't want them stacked ontop of each other. it is obvious when this happens as the leaves all seem to pop out from same exact spot.. looks weird.