They look pretty good to me! :thumbsup:
I'd usually guess at one month they need repot, however you started in huge pots. So that isn't it!:wtf:
Thus I'd have to guess you need nutes aimed AT MJ. I'd suggest either Fox farms, or BC. Both are made FOR MJ. Here's what I bought:
https://www.discount-hydro.com/produ...d=513&navid=12
This is a hydroponic kit, but I am growing in soil just like you. I mixed it very weak due to this. Currently at 4 weeks of flower and mixing the flowering nutes at 1/4 what's suggested for hydro. Then only using nutes every third watering.
You can get your lights as close as doesn't cause your hand any heat discomfort at the same distance too.
I'd also suggest giving more info, like humidity, what type of lights, what temps are you seeing with light on and off, AND what were the nutes you gave?
Good luck