I did and provided a source that in turn links further sources including the precious little the US government freely publishes on this.
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There are relatively modest changes that can be adopted to slow down the first strike process to a degree where either other parts of the executive or special congressional committees could intervene to halt it.
Even something like requiring a 2 person confirmation for a first strike order, like the President + 1 any living member of the executive, possibly including under-secretaries would decrease the chances of "rogue" first strike order by 100%.
Furthermore mild changes can be made to the retaliatory position as well where the process becomes less automated and less likely to literally railroad a president into a nuclear strike he might not even want to initiate.
Our entire nuclear posture is fucking retarded and has always been fucking retarded and was designed to be fucking retarded.
It's the equivalent of walking around with a drawn and loaded gun with a hair trigger that goes off if you breath on it, hoping the guy carrying the gun never stumbles, never shakes, never gets mad, never loses his nerve or mind. That has been our nuclear posture for something like 60 years now. The fact that we are all still alive has more to do with blind dumb luck than anything else.