Thanks for all your advice. No matter how much I look at Google results of searching for guidance on plant questions and issues, there just isn’t anything as good as being able to show the pics to those who know more. Thanks for letting me be a part of this community!
This plant is a Sativa dominant in a majority of HP Pro Mix with a little organic fertilizer. I try to water and feed with low 6a PH and use Recharge and Fish Shit every other. Used Grow Big while in veg for 3 months. Plant is just recently showing these thin leaves that are droopy and canoeing under. Some leaves have only three leaves. This seems to have happened in the last 5 or 6 days. It is in a 4x4x6 room with an HLG 300R at 12/12. Temp is mid 70s and RH of 50%. No changes that I can think of and two other much smaller plants put to flower at same time are much fatter with their buds. Trimmed back the top colas as they had got unruly but that was just yesterday.
Any idea what is causing this and how I can correct?