change display order(number) in django admin easier?

Question

Currently, I add display_order to my models, and my model objects will be display in main.html order_by this number.

i.e. I when I have 5 objects, I can give numbers to them 1 to 5, and it's displayed in main page from 1 to 5.

like this

Unfortunately, it's little bit hard to change numbers one by one every time change this order. So I want to change this method for admin people.

Is there more convenient way to change those order at one, more easily?

Any suggestions and ideas are fine.

Thanks in advance!