Hey also a suggestion I had seen if you are concerned about over watering is get a scale and weigh a pot that you fill with medium and leave dry. Take that weight and record it. You can do this when you are potting up before you water in the medium and plant up the seeds. Then throughout your grow you can pick up your pot and feel the weight by hand, and if you doubt yourself, plop it on the scale and compare it to that earlier dry weight. Soon enough you won't need the scale or an extra dry pot to know when to water. The one thing I made different in my watering was making it wider and further out to accelerate the outward root development. I essentially water the edge of my bag now and send maybe a couple hundred ml right down the stalk. This has proven beneficial to me as I have seen way better growth after I made this change. I also started watering with a higher amount at an earlier stage. To try and get those roots to drop in the container and not just sit in a little ball up top.
How much water are you giving them? I'm trying to do some research to help you out! We are going to save these girls!