I haven’t been growing long, but I had some similar issues when I first started and was able to figure it out with a couple months of research and experimenting. First of all, too many leaves on such young plants, you want those plants to focus on growing roots. So cut off the big lower leaves, only leave on the top ones. Then take a 2 liter bottle or something similar to create a whole lot of humidity, cut the bottom off and take the lid off and set it over the clones (I’ll post some pics of one of my clones,) right now those plants probably have a weak root system so they get most of their water through the leaves. Make sure to not soak the soil and instead add a little water to whatever dish they’re sitting on, that way the bottom holes in the pots can soak up some water but not drown, (make sure to let them almost completely dry out before adding more water.) then get a humidifier and keep the humidity in their 2L domes around 80 %. Also check ph and make sure it’s between 6-8.