Fed = onceBut He did (say it).
John 6:54-56 NIV - "Whoever eats my flesh and drinks my blood has eternal life, and I will raise them up at the last day. For my flesh is real food and my blood is real drink. 56 Whoever eats my flesh and drinks my blood remains in me, and I in them."
Feeds = ongoing
Just as the living Father sent me and I live because of the Father, so the one who feeds on me will live because of me.
Jesus never drives us away so if one doesn't remain in Him its not Jesus's doing.
Here is a trustworthy saying:
If we died with him,
we will also live with him;
12if we endure,
we will also reign with him.
If we disown him,
he will also disown us;
13if we are faithless,
he remains faithful,
for he cannot disown himself.
A warning to saints
A third angel followed them and said in a loud voice: “If anyone worships the beast and its image and receives its mark on their forehead or on their hand, 10they, too, will drink the wine of God’s fury, which has been poured full strength into the cup of his wrath. They will be tormented with burning sulfur in the presence of the holy angels and of the Lamb. 11And the smoke of their torment will rise for ever and ever. There will be no rest day or night for those who worship the beast and its image, or for anyone who receives the mark of its name.” 12This calls for patient endurance on the part of the people of God who keep his commands and remain faithful to Jesus.