I haven't done anything. It's not that I don't believe in cutting the hair, or trimming or even doing SD, I just don't do it because the thought of it all fills me with dread. I do believe that I would experience less shedding if I did it but instead, I just try to be really gentle with my ends. Because my hair is much longer, my shed strands are long. In the beginning this was very scary. I thought my hair was falling out at the roots. But no, just shed hair, since I do very little manipulation. I wear a lot of different styles but use very little manipulation to obtain them.
It really depends on your hair. Some hair truly thrives with regular trims.
I can't remember the last time I actually got many inches cut off my hair. I want to say it was 2009. Usually, any hair that's going to come out just starts to fall. (when washing). Sometimes, I see hanging strands that clearly want to come out, but don't. If that strand is super, super fine at the end, with no curl, I may snip it. I don't believe that I have to worry about cutting ends unless I have a lot of straggling hairs when I style or knots and I don't suffer from that, so I don't worry about cutting or trimming. I have been thinking about wearing my hair straight, in which case some snipping may be necessary to ensure that it looks nice and tidy.