You can sign the post-nup right after you say, "I do." The only real difference between the pre-nup and the post-nup is when it is signed. The rules are the same for both documents. A waiver of maintenance will be looked at similarly in both documents. Basically, the document has to be fair, done without undue coercion, and no fraud. I would suggest getting a lawyer to draft it and not to use a form down loaded from the internet.
There is so special waiting period as you've asked. It's good as soon as it is signed. You should still have an attorney licensed in your jurisdiction review it, however.
Bill Rosenfelt 407-462-8787 (Orlando)
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