Thank you — I understand the trust itself can’t be modified and wouldn’t have been part of any agreement.

My question is narrower: when we asked how to address the imbalance and he suggested things like a life insurance backstop, why didn’t he also mention a postnuptial agreement (i.e., a contractual arrangement between us) as a possible tool?

Was there a specific reason he thought it was inadvisable / unlikely to hold up / not appropriate, or did it just not come up?