Can you show what you're talking about?
If you're talking about your dashboard, which looks kinda like this:
Then I don't think there's much you can do with the arrangement. It shows the most recent episode you've posted, but that's just for your eyes only. It might be like that just so you can see the most recent episode first and not have to scroll through.
Your viewers won't see the episodes out of order. Their view is more like this:
Unless, your set-up is looking way different than this.