Bands have been re-releasing albums for decades.
So yes, you should re-share that post you wrote 8 months ago.
Talk about your first show 20 years ago, the award you won 10 years ago, that feature you had 5 years ago.
Celebrate your year old music video with a quick interview with the director.
Celebrate the five year anniversary of your favorite song. Favorite gallery. Favorite photo.
Everything doesn’t need to be new new new. Most everyone has never seen any of your work.
Show it to them.