My avocado seedling's stem grew to almost 20" until I read you're supposed to cut it back. I cut it down to about 10" and it's recovering and growing back, but now I'm wondering if I should cut it back even smaller. I have no expectations that this thing will grow, but I'm going to try (I live in Oregon). Should I wait for leaves to grow before cutting it back, assuming you think I should. Here's a photo of it today.