So it's about time for our 2nd progress update, in about 10 days. I'm intending to do a small trim. But I've been thinking about the logic of trims. I don't really have split ends. What I have are knots. If I trim just the last 1/4" or something, I'll only get a small number of knots. Most of the knots are probably 1/2"-1" above the end of the hair. So it doesn't make a lot of sense for me to trim for the purpose of cutting out knots if I cut less than the length where all the knots are. I'd trim that 1/4" and still have all the knots. Which is one of the reasons I don't do trims that short anyway.
On the other hand, if I cut 1" more often than about once every 3 months, my hair would stay about the same length, since 1" is what I've been retaining per 3 months for the last half a year or so. So I have to cut enough for it actually have an effect, but I can't cut too often or I won't see any growth. After I cut, knots will develop quickly again, so it's not even like cutting gives me more than a month of easier detangling.
I think I"m going to aim for 1/2" this trim. That will get some of the knots, certainly not all of them. I'm not even sure if it will get most of them. But maybe it will be enough to make a difference. I might go ahead and flat iron, too, since I'm off most of this week. That would mean that of the roughly 2" I've retained in the last 6 months, I can keep 1 1/2" of it.
This woman, whose hair is nothing at all like mine, was talking about how she only trims once a year. I don't know if I'd be willing to go that long, but it was interesting to hear her talk about it (around 2:00)