Honestly, like my favorite Minecraft Server, I don't think it's dying; It's just everyone's school year schedules that are making people go offline all day.
They probably don't go online during school because they're afraid they'll get caught (Unless virtual).
They probably don't go online AFTER school because they have Homework to do, finish work or extra activities they would have to do.
Notice on the weekends that lots of people are on too; But I don't know, who knows-