Absolutely. I'm all in favour of updates as and when they're useful. But there's no point in updating just for the sake of updating.
Many of my projects are years old - I'll work on them a bit, then I'll work on something else. Then I may come back to my other project again. If I make a big advance, then I tell people, but there's no point in updating people to say "I'm still not working on this project right now, but I may do in the future". My projects never die, they just rest. Sometimes permanently.
perhaps you should optimize your "working process" a little
I must admit if you are working on different projects now and then communication and blog might become complicated
like "I wanted to continue on xxx and did a little debugging found wrong typo but then I lost interest"
perhaps I am a little different there, I do not like to way to get somewhere, I like to reach the goals. Because of that I will not work on "many" different projects but only few (at the moment I am only working on one and still have new ideas even after years). But everybody is different.