The Eye, Hand, and Mouth of Faith

Burroughs wonderfully explains the great importance of faith in communion (GW 245-247). Multiple times he uses the phrase the "eye of faith" to describe how believers need faith to really see Christ in the sacrament. By faith they must also reach out and take it (the hand), and then finally eat it (the mouth). This grand imagery is a magnificent picture of what the faith of the believer should look like during the Lord's Table. My question is: How do we help those whose faith is weak (and possibly even sometimes our own: Lord, I believe; help my unbelief!)? I ask this in reference to being able to see Christ in the sacrament, to being able to take hold of the elements and fix one's eyes on Christ and not one's own sin, to being able to grasp the gravity of it all.