My okra seedlings are 8 and 6 weeks old.

They have lost their first leaves, and now have about, I would say, 6 true leaves each. Their stems have gotten about twice as thick and tough as seedling stems, and they look stronger, but they are still about 6' tall. They are in ceramic pots. I'm not sure why they aren't growing much. They haven't grown in maybe two weeks.

Any ideas?