I turn mine back but don't shorten the duration. It's probably more natural to do it that way, but then again there's nothing natural about it being dark one second then instantly having light the next.
I don't, doesn't matter to me. I run my lights from somewhere in the early afternoon (while I'm at work) until about midnight, so I guess now it's only until 11pm. Either way, it's after I go to bed most nights. The point for me is to have the lights on for most of my "at home waking hours" and that's from around 6pm until about 10pm 5 to 6 days out of the week.