Can I change my existing one delivery order to milestones order?

[ryandevv]

I have an order which is on revision, and it’s been one month now. The buyer’s decision has changed, and he needs up to 1/2 months to give me the new task to complete the project. So far he’s very satisfied with my work and I have finished the tasks he’s given so far. The project is on unlimited revisions.
So, is there any way to change this order to a milestone order? I’m sure my buyer won’t have any objection doing that.
How can I do it?

[fahimulkarim]

There’s no option to do that. You could extend the deadline.