Saggy Clone

Hi i am VERY new to growing and have just got three clones off a friend, i have two smaller not so rooted clones in a square pot (about 4 inches wide by 6 tall) and a larger well rooted clone (i received them like this from the grower). The problem i have is with the two smaller clones, one is doing okay but one is heavily sagging (stems sagging over the side of the pot) and just hasnt grown at all. it has been dark green the whole time and in the last few days the tips of some leaves have yellowed. Is This a normal thing happening?

If it helps at all i was told its "hindu kush" but im really not sure he could be full of shit

Thanks

It sounds like u had or have a problem with underwatering or poor root/stem contact to the medium. Its hard to say w/o a pic... Good luck