You MIGHT try reading the bible.
7 Then the Day of Unleavened Bread came when the Passover lamb had to be sacrificed. 8 Jesus sent Peter and John, saying, “Go and prepare the Passover meal for us, so we can eat it.”
9 “Where do You want us to prepare it?” they asked Him.
10 “Listen,” He said to them, “when you’ve entered the city, a man carrying a water jug will meet you. Follow him into the house he enters. 11 Tell the owner of the house, ‘The Teacher asks you, “Where is the guest room where I can eat the Passover with My disciples?”’ 12 Then he will show you a large, furnished room upstairs. Make the preparations there.”
13 So they went and found it just as He had told them, and they prepared the Passover.
...and here is how it went down...
Luke 22:19–20
19 And he took bread, and when he had given thanks, he broke it and gave it to them, saying, “This is my body, which is given for you. Do this in remembrance of me.” 20 And likewise the cup after they had eaten, saying, “This cup that is poured out for you is the new covenant in my blood.
Matthew 26:26–28
26 Now as they were eating, Jesus took bread, and after blessing it broke it and gave it to the disciples, and said, “Take, eat; this is my body.” 27 And he took a cup, and when he had given thanks he gave it to them, saying, “Drink of it, all of you, 28 for this is my blood of the covenant, which is poured out for many for the forgiveness of sins.
Mark 14:22–24
22 And as they were eating, he took bread, and after blessing it broke it and gave it to them, and said, “Take; this is my body.” 23 And he took a cup, and when he had given thanks he gave it to them, and they all drank of it. 24 And he said to them, “This is my blood of the covenant, which is poured out for many.
And just what is this? The yearly Passover where the Jews REMEMBER the salvation of the Lord.
...and here is what Paul added later...
1 Corinthians 11:17-34
17 In the following directives I have no praise for you, for your meetings do more harm than good. 18 In the first place, I hear that when you come together as a church, there are divisions among you, and to some extent I believe it. 19 No doubt there have to be differences among you to show which of you have God’s approval. 20 So then, when you come together, it is not the Lord’s Supper you eat, 21 for when you are eating, some of you go ahead with your own private suppers. As a result, one person remains hungry and another gets drunk. 22 Don’t you have homes to eat and drink in? Or do you despise the church of God by humiliating those who have nothing? What shall I say to you? Shall I praise you? Certainly not in this matter!
23 For I received from the Lord what I also passed on to you: The Lord Jesus, on the night he was betrayed, took bread, 24 and when he had given thanks, he broke it and said, “This is my body, which is for you; do this in remembrance of me.” 25 In the same way, after supper he took the cup, saying, “This cup is the new covenant in my blood; do this, whenever you drink it, in remembrance of me.” 26 For whenever you eat this bread and drink this cup, you proclaim the Lord’s death until he comes.
27 So then, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of sinning against the body and blood of the Lord.
28 Everyone ought to examine themselves before they eat of the bread and drink from the cup. 29 For those who eat and drink without discerning the body of Christ eat and drink judgment on themselves. 30 That is why many among you are weak and sick, and a number of you have fallen asleep. 31 But if we were more discerning with regard to ourselves, we would not come under such judgment. 32 Nevertheless, when we are judged in this way by the Lord, we are being disciplined so that we will not be finally condemned with the world.
33 So then, my brothers and sisters, when you gather to eat, you should all eat together. 34 Anyone who is hungry should eat something at home, so that when you meet together it may not result in judgment.
And when I come I will give further directions.
So; just what happened between the Gospels yearly Passover that Jesus partook in, and Paul's description of meals that were entirely different??