I think most people are trying to cut down, either because they know it makes sense in the current circumstances, or due to financial reasons. In our case, both.
But our efforts won't make much change if businesses and industry don't make changes themselves. I went into our Council the other day, to complain that their lights in a massive buidling, are on all night every night. They did listen, and all lights came off the next night! But so many shops have the heat blasting, and doors wide opened! What a nonsensical waste. All shops have lights on all night too.
In many countries, street lights have been dimmed, or even cut out, from midnight to 6am- or only some of them on, Same for roads. Gas lights in outside covered areas in pubs and restaurants should be banned too, and they have been in many other countries.
Example should come from the top, I believe.