n deficiency?

Alittle new with TON of questions I know there are answers right in front of me, but I do find answers pulling you one way then another way! So if anyone is interested to message me to help me along the way, that would be great help & new friendship ;) For some time now I've been managing to...

First time grow and about 18 weeks into veg. My lady is yellowing on some of the tips. I think it's a N deficiency. Looking for advise as to what I can do organically to add N or if it's a concern. Growing in a 5 gallon fabric pot. The bottom is filled with 5lbs of "kind hot soil" and the base...