First thing is to get them each they own home, then try and nurse them back up to health, increase the light to stop the stretch and get a fan to bulk up those stalks. Then give them nutes and let them do they thang! Good Luck
why not just germinate and plant some new ones. those have been pretty stressed out and even if you nurse them back, they could end up males. Those don't look more than 2or 3 weeks old?? I may be wrong, hard to tell by looking at the pics.