Yes, true conversion results in obedience to the word of God, the Scriptures and what the Spirit leads to in accordance with it. (Rm. 8:14)
The Lord fed the 5000 and all had their fill. You know He fed them well and with good food. They came back looking for more and He was basically saying that is not how this works. You need His Body and Blood to be saved.
Meaning effectual regenerating faith which thus lives by the word of God as Jesus said to do, and which was His "meat," which He taught is what eating and living by Him, the Word made flesh, meant in metaphor intensive John.
As the living Father hath sent me, and I live by the Father: so he that eateth me, even he shall live by me. (John 6:57)
Jesus saith unto them, My meat is to do the will of him that sent me, and to finish his work. (John 4:34)
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 4:4)
Nowhere was literally physically consuming anything the means of obtaining spiritual life within, which by penitent faith in the risen Lord Jesus who saves sinners on His account.
Thus, the Lord's supper is nowhere referred to as spiritual food anywhere interpretive of John 6 (Acts thru Rev.), instead, the word of God is what is taught as being spiritual nourishment, being that which is called "milk" and "meat" (1Co. 3:2; Heb. 5:13; 1Pt. 2:2) by which believers are "nourished" (1Tim. 4:6) and built up, and with the preaching of which being the primary active function of pastors, whereby they "fed the flock." (Acts 20:28, 32) Thanks be to God
John 6
51 I am the living bread which came down from heaven. 52 If any man eat of this bread, he shall live for ever; and the bread that I will give, is my flesh, for the life of the world. 53 The Jews therefore strove among themselves, saying: How can this man give us his flesh to eat? 54 Then Jesus said to them: Amen, amen I say unto you: Except you eat the flesh of the Son of man, and drink his blood, you shall not have life in you. 55 He that eateth my flesh, and drinketh my blood, hath everlasting life: and I will raise him up in the last day. 56 For my flesh is meat indeed: and my blood is drink indeed. 57 He that eateth my flesh, and drinketh my blood, abideth in me, and I in him. 58 As the living Father hath sent me, and I live by the Father; so he that eateth me, the same also shall live by me. 59 This is the bread that came down from heaven. Not as your fathers did eat manna, and are dead. He that eateth this bread, shall live for ever. 60 These things he said, teaching in the synagogue, in Capharnaum. 61 Many therefore of his disciples, hearing it, said: This saying is hard, and who can hear it? 62 But Jesus, knowing in himself, that his disciples murmured at this, said to them: Doth this scandalize you? 63 If then you shall see the Son of man ascend up where he was before? 64 It is the spirit that quickeneth: the flesh profiteth nothing. The words that I have spoken to you, are spirit and life. 65 But there are some of you that believe not. For Jesus knew from the beginning, who they were that did not believe, and who he was, that would betray him.