Starting a Mother Plant

I started 1 plant from seed that has been growing for a little over a month. I have it on a 24 hr light cycle and my goal is to take clones. I am not sure if it is a female yet but what i want to do is let it continue to grow, take some clones from it and then determine the sex from one of the clones by going on 12/12 cycle. I have not cut or pruned anything from the plant yet and not sure if i should being it is a little over a month old, have read it says to wait until it is at least 2 months old but not sure. I included a picture and appreciate any advice.