Lord's Supper

Matthew 26
17 Now the first day of the feast of unleavened bread the disciples came to Jesus, saying unto him, Where wilt thou that we prepare for thee to eat the passover? 18 And he said, Go into the city to such a man, and say unto him, The Master saith, My time is at hand; I will keep the passover at thy house with my disciples. 19 And the disciples did as Jesus had appointed them; and they made ready the passover. 20 Now when the even was come, he sat down with the twelve. 21 And as they did eat, he said, Verily I say unto you, that one of you shall betray me.

Mark 14
12 And the first day of unleavened bread, when they killed the passover, his disciples said unto him, Where wilt thou that we go and prepare that thou mayest eat the passover?

Matthew 4
4 But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God.

Matthew 18
20 For where two or three are gathered together in my name, there am I in the midst of them.

This suggests that Jesus does not take much food at evening cause its bad for the health for your intestines to be working at night when it should be resting. If you want a complete meal, you eat not only bread so include meat, salad and beer. Eat breakfast like a king, lunch like a prince and dinner like a pauper.

The Passover is from Moses that you have a buffet meal so Jesus and his disciples kept a light diet at the evening at Jesus' place because they don't want their diet to be known cause their a secret society.

For the Mass proceedings, not only three people are gathered in God's name but a multitude of people gathered together so this is good or what? God is with these people. People have different schedules so you organize yourself which time is best for you to attend the mass.

Now you ask why the heaviest meal at the breakfast is to recover from fasting, gives energy for the day and long term. Its also important that you push the shit out from your intestines. If you eat heaviest at night, you will wake up at ungodly hours shitting your pants.