24and when He had given thanks, He broke it and said, "This is My body, which is for you; do this in remembrance of Me."
25In the same way He took the cup also after supper, saying, "This cup is the new covenant in My blood; do this, as often as you drink it, in remembrance of Me."
26For as often as you eat this bread and drink the cup, you proclaim the Lord's death until He comes.
27Therefore whoever eats the bread or drinks the cup of the Lord in an unworthy manner, shall be guilty of the body and the blood of the Lord.
28But a man must examine himself, and in so doing he is to eat of the bread and drink of the cup.
29For he who eats and drinks, eats and drinks judgment to himself if he does not judge the body rightly.
30For this reason many among you are weak and sick, and a number sleep.
31But if we judged ourselves rightly, we would not be judged.
32But when we are judged, we are disciplined by the Lord so that we will not be condemned along with the world.
33So then, my brethren, when you come together to eat, wait for one another.
34If anyone is hungry, let him eat at home, so that you will not come together for judgment The remaining matters I will arrange when I come.
As a matter of fact, it does.
34If anyone is hungry, let him eat at home,...
sounds to me like it is NOT a the kind of "Eating a meal!" that we normally do to nourish our bodies.
Also, it seems so unremarkable that they "continued in having lunch (or whatever) together," that I don't see how it is worthy of note. Where did they go for breakfast - or did they eat every meal together, or what?
It is also difficult to believe that within 2 or 3 generations the early Christians would have somehow forgotten what you argue was in the Gospels, Acts, and the Corinthian correspondence.