Those without the Sacrament of Holy Eucharist don’t worship as Christians have since Acts - as we also see in the Catacombs of Rome and the Church throughout history.
Remembrance only is a very recent innovation.
And without the Eucharist and Mass, “worship” becomes something quite different - lacking in worship consisting only of prayer, lecture and song.
So much of Christian worship and faith was lost for many outside the Church: Sacraments, and as in the creeds: Communion of Saints and One, Holy and Apostolic Church.
“Remembrance only is a very recent innovation”.
The ceremony Jesus instituted was quite simple, not the ritual you refer to. And it was THAT he said to do in remembrance of his death.
“And without the Eucharist and Mass, worship becomes something quite different - lacking in worship consisting only of prayer, lecture and song.”