hello m8 im a first time grower too lol my 2 white widow cuttings are ok but this seems to be drooping a lil it could be a couple of things
1=it could be overwatering or underwatering
2=it could be that it is concentrating on new root growth then it will perk up again later
3=it could be malnutricion
it is hard to tell so im gonna keep an eye on it for a couple of days you do the same m8 and post any progress i will also do the same maybe one of us can sort this and pass the info on to the other hey
cheers hope this helps m8