How long has it been since your transplanted and how long since it stopped growing?
Been like this size 2-3weeks, since transplanted them.
Try watering around the plant instead of directly on it and more often!
Also after transplanting there can be root growth you can’t really see. Once that happens the upper growth will start again.
Looks healthy, i would go with root growth. She should take off soon. Tagging along if thats ok