Fastbuds Green Crack Auto First Timer

Unfortunately growth stalled and cotyledon turned blackish green and then the baby leaves shrivelled up and the stem fell over. Removed the plant and the tap root looked healthy white. I think it's damping off, maybe from overwatering. Gonna germinate and plant another seed and grow in a small yogurt tub and mist with hydrogen peroxide/water mix. Fabric pot and soil is holding water for longer than I thought it would, so will restrict watering to once a week or even less after I transfer this second seedling from the yogurt tub to the fabric pot. Oct 3: Been two days after potting and seedling hasn't emerged :(