JCK testifies that OP taught polygamy was unnecessary for exaltation.
United States Testimony 1892, Temple Lot Case, pg. 205, Mormon Polygamy Documents, accessed September 10, 2021
592 Q-Did they not preach in the Tabernacle on a day in August 1852 that a man could not be exalted in the hereafter, unless he complied with the revelation on polygamy, and took more than one wife? A-Not to my knowledge.
593 Q-You never read that? A-No sir.
594 Q-You did not hear those sermons on that day? A-No sir.
595 Q-You don't know anything about that? A-I did not hear that.
596 Q-If that is the doctrine of the church, you don't know what the doctrine of the church is, do you? A-If that is not the doctrine of the church, did you say?
597 Q-If that is the doctrine of the church I said, that a man must have more than one wife, -two wives,-in order to be exalted in the hereafter,-if that is the doctrine of the church, you do not know anything about it do you? A-Well the idea of it is this, I never heard that.
598 Q-You never heard that? A-No sir, I never heard them preach that in the Tabernacle.
599 Q-Do you say that they did not preach it? A-No sir, I don't say they didn't preach it. They may have done so, but if they did I didn't hear it.
600 Q-Do you say it was no t a law of the church, and taught by the Presidency of the church from that time down, that a man in order to be exalted in the hereafter,-in eternity,-must have two wives or more? A- No sir for I heard it preached from the stand that a man could be exalted in eternity with one wife.
601 Q-Answer my question,-have you not also heard it preached from the stand that a man could not be exalted unless he had more than one wife? A-No sir.
602 Q-Who preached that he could be exalted in the hereafter with one wife,-just name your man? A-Orson Pratt.
603 Q-When was it he preached that? A-Just before his death"
604 Q-When,-when was it he preached that? A-It was just before his death,-I don't know when.
605 Q-Where was it he preached that? A-In the Tabernacle just before it was torn down.
606 Q-What year was that? A-I don't know,-it wasn't long before his death.