That's one way to do it...many have.....I wouldn't have waited a month to try the wire cage method tho, might try the cold water if the cage didn't work.
My experience went like this: After her setting for 3 days and nights in the nest, I put her in a wire dog crate with smaller wire on the bottom but no bedding, set up on a few bricks right in the coop and I would feed her some watered down crumble a couple times a day.
I let her out a couple...