The language of "eating His Flesh and drinking His Blood" is explicit and consistent: from (500 years ago) Trent, and (800 years ago) Aquinas, and 1800+ years ago (Ignatius of Antioch and Justin Martyr), right back to Matthew - Mark - Luke - John and Paul(notably Corinthians).
Patently not true and already shown to be so on this thread....go back and read the comment regarding the Didache.
The only place in the NT where people are told to eat/drink the flesh and blood was to unbelieving Jews who were looking for a sign. And it was the unbelieving Jews who brought up the eating/drinking flesh and blood.
In no passage in the NT were new believers or prospects told they had to eat/drink flesh and blood.
Transubstantiation only came about in 1215. Hard to say the early church believed what Roman Catholicism teaches about this topic in light of this.
Recall, one of the charges against the early church was that of cannibalism….which the early church rejected.