Stunted growth. need help!

ok so i have 4 plants total. 3 of them on a organic soil mix. these 3 stopped growing as soon as they were planted there. they are in a 3 gallon pot. my question was since the problem is obvious is there any way for me to move it to another soil without disturbing roots to much? or can i just clone them? heres a picture of the smallest one and was the one showing great growth out of them all at first :[

the problem is not obviously the soil. It could be thousands of different variables. Fill out the form sir.

IMO, there doesn't appear to be anything wrong with the plant that a good feed wouldn't fix. Most likely scenario - your 'organic soil' was an unfertilised variety, of course more information would be useful.