We pointed out last week that Messiah, the Word, became flesh. When He says eat of my flesh and drink of my blood, He's speaking to them words that are Spirit, but they are hearing His words in the natural. When you eat of His Word, consume His Word, you're eating His body and drinking His blood.
He dwells in you because you are consuming His Word! It's not something you do once a month, or once a quarter, or once a year, it's something you do every single day, all day. But if you're just simply memorizing His Word, learning His Word, and not applying or walking in His Word, then, you're following Him but you're not His Disciple.
John 6:57
As the living Father hath sent Me, and I live by the Father: so he that eateth Me, even he shall live by Me.