Hey grnmtn, you did your best. That’s all you could do. I’ve grown many plants (all outdoors) and some just seem “off” for some reason. It can be septoria, thrips, mites, or just slow weird growth. I grew six outdoor feminized plants this year with two of them growing thin and tall and lagging far behind the other four. I learned to be efficient with my time and efforts by chopping the slow pokes (with obvious growth problems) in July and concentrating my time on the other four. Best growing decision I made in a long time. I’ve also learned to plant a couple extras over the years for this particular reason. Sometimes less is more. Good luck in future grows.