What kind of light do you have them under ? They seem very behind, is the medium CoCo ? If so, what nutes are you using, organic, salts ? In all honesty they look really behind bro. In good health though they look nice the runt and the 2nd largest seem like they're about to yellow out a bit. N deficiency in the making, despite the lack of growth the 2nd largest looks to be happy hence the praying position (leaves extended upwards) so at least the environment is probably agreeable to the strain. Eventhough autoflowers tend to be smaller i think they're hungry bro. Whats your ppm's? IDK, i may be wrong. Unless your growing in soil and using a low wattage CFL + revolver's a smaller autoflower strain. Unless all of those are true then your girls are underfed and receiving poor light. Remember to expose them to partial sunlight at first not direct sunlight so they dont go into shock and place them in a larger container a much larger container, the larger the better. Best of luck to you.