Ooooooooo...Two baptisms? Thats a bit wrong. That was answered prior to our Schism by St. Augustine of Hippo.
As for the Ecumenical Council in 2025, its supposed to bring the Patriarchate of Greek Orthodoxy, Serbian Orthodoxy, Syrian Orthodoxy, Russian Orthodoxy (They've already declined) and the Roman Catholic Church together to again discuss the possiblity of reunification. Just as the Council of Lyons in the 1200s, which fell flat due to the death of St. Thomas Aquinas and the poisoning of St. Bonaventura.
No it would still be one baptism that is ONE TRUE Baptism. The Church does not recognize the current form of baptism of the RCc due to not actually baptizing (immersion) however infusion is an accepted if it is NOT AT ALL possible for one to be baptized to the norm (immersion). When a NEstroain comes to the Church he is admitted by Christmation only because the 3rd Ecumenical Council decreed that the baptism of the Nestroains is acceptable.
The 'councils' of Lyons and Florence were false councils in which the Byzantine emperors tried to force the RC and Orthodox together in order to preserve his empire. Howvere many saints such as St. Mark of Ephesus helped end this apostasy and the Greeks remained Orthodox.
And again you refer to the false 'patriarchates' which were infiltrated by the Masons and ecumenists/modernists.