It would be possible to accomplish what you are discussing. You would need to prepare
a stipulated modification to your final judgment detailing the exchange of current support in exchange for ownership of his retirement account.
While it would be prudent to have an attorney draft the paperwork, it would be possible to do it on your own. The stipulation would need to provide sufficient detail so as to be easily understood by all parties. It would also need to be signed and notarized by you both. Upon completion, it would be forwarded to the judge for his signature as well. Once the judge has signed off on it, the document would be an official court order, binding on you both.
Please let me know if anything requires clarification.
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