Matthew, Mark, and Luke agree Jesus ate the Passover with his disciples. They don’t talk of any unusual preparation. Luke specifies that it was on the day the lambs were sacrificed that Jesus told them to make the preparations for that evening’s meal.
… We are now able to say that John’s account of the passion is historically precise. Christ really did shed his blood on the eve of the Passover at the hour of the slaughter of the lambs. However he celebrated Passover with his disciples according to the Qumran calendar, therefore at least one day earlier – he celebrated it without lamb, as according to the traditions of the Qumran community, which did not recognise Herod’s temple and was waiting for a new temple. Christ therefore celebrated Passover without the lamb….
But I suppose that’s better than the version of Anne Catherine Emmerich, in which four lambs are eaten in the upper room, but he and his closest disciples eat one that he had Peter kill in the upper room, on the spot where she says the ark of the covenant once rested. It was “a beautiful little lamb, decorated with a crown.” And they ate it at a high table, “a foot higher than the knees of a man.” With ivory knives. Weird stuff.