If Davis had been lobbying the Confederate Congress for a while on the issue of emancipation in exchange for Diplomatic recognition by the Brits and French, there should be s series of letters, minutes of meetings or statements in Memoires to this effect. You would substantiate your case considerable if you were to provide documented references to those discussions or meetings. Otherwise all we are left with is your opinion that Davis did such a thing. My answer to that is that you'll have to read for yourself. I can provide you these sources directly. I'm not going to spend huge amounts of time digging around to show Davis had lobbied Congress earlier though I've read from several sources that he had. If you choose to disbelieve because I refuse to go on an hours long goose chase...*shrug*...so be it.
"Beginning in late 1862, James Phelan, Joseph Bradford, and Reuben Davis wrote to Jefferson Davis to express concern that some opponents were claiming the war "was for the defense of the institution of slavery" (Cooper, Jefferson Davis, American, pp. 479-480, 765). They called those who were making this claim "demagogues." Cooper notes that when two Northerners visited Jefferson Davis during the war, Davis insisted "the Confederates were not battling for slavery" and that "slavery had never been the key issue" (Jefferson Davis, American, p. 524).
"Precious few textbooks mention the fact that by 1864 key Confederate leaders, including Jefferson Davis, were prepared to abolish slavery. As early as 1862 some Confederate leaders supported various forms of emancipation. In 1864 Jefferson Davis officially recommended that slaves who performed faithful service in non-combat positions in the Confederate army should be freed. Robert E. Lee and many other Confederate generals favored emancipating slaves who served in the Confederate army. In fact, Lee had long favored the abolition of slavery and had called the institution a "moral and political evil" years before the war (Recollections and Letters of Robert E. Lee, New York: Barnes and Noble Books, 2003, reprint, pp. 231-232). By late 1864, Davis was prepared to abolish slavery in order to gain European diplomatic recognition and thus save the Confederacy. Duncan Kenner, one of the biggest slaveholders in the South and the chairman of the Ways and Means Committee of the Confederate House of Representatives, strongly supported this proposal. So did the Confederate Secretary of State, Judah Benjamin. Davis informed congressional leaders of his intentions, and then sent Kenner to Europe to make the proposal. Davis even made Kenner a minister plenipotentiary so as to ensure he could make the proposal to the British and French governments and that it would be taken seriously."
“By late 1864, Davis was prepared to abolish slavery in order to gain European diplomatic recognition and thus save the Confederacy.”
Exactly as I had states. It was a last ditch effort to save a Confederacy that Davis realized was dying. Why didn’t he make the offer in 1862? Because Davis believed that the Confederacy had a good chance of surviving at the time.
By Nov 1864 all such thoughts were gone. It was a last ditch effort, just as enlisting 40,000 slaves for non combat duty, and a few month later allowing them to enlist in combat units. The dying gasp of diplomacy and social engineering to try and save the Confederacy.
That same act in late 1861 would have made a huge difference, probably would have won the war.
By late 1864, with the war nearly lost, it both was and was seen as an act of pure desperation and insincerity -- far too little, far too late.
By 1865, when Confederates approached Europeans on it, the Brits were not interested and the French were willing to follow British lead.