The Lord supper was instituted by the Lord. I do not necessarily believe the communion is the only time of eating Christ it could be symbolic of one accepting Him first that He already communes with Christ and the ceremony is to show one accepts Him and lives in Him which is what eating and drinking Him is which is shown in a ceremony for the purpose of edification of others only to those who examine themselves
But if one believes the bible also teaches communion is necessary for sanctification one can go to a church that holds communion that accepts one. It is actually a command of Jesus that all churches should be practicing to have communion and one receives Him because of one faith by asking the Lord to bless the communion for one benefit which one must take in a church to encourage others to receive communion if one examines himself and come together to remember the Lord and God blesses it and sanctifies it. It could therefore allow one to be healed in this life not just live righteous to have life. For the rest it may be given in the age to come for those who are worthy who still lived righteous bearing Holy Spirit fruit to have spiritual life but not complete healing to have that life immediately. One will still need to be healed in the age to come but the spirit does not die as it can still be restored after being punished for not choosing healing now because one still did the will of God with guidance of the Holy Spirit but one was not fully healed without His gifts
But if one believes the bible also teaches communion is necessary for sanctification one can go to a church that holds communion that accepts one. It is actually a command of Jesus that all churches should be practicing to have communion and one receives Him because of one faith by asking the Lord to bless the communion for one benefit which one must take in a church to encourage others to receive communion if one examines himself and come together to remember the Lord and God blesses it and sanctifies it. It could therefore allow one to be healed in this life not just live righteous to have life. For the rest it may be given in the age to come for those who are worthy who still lived righteous bearing Holy Spirit fruit to have spiritual life but not complete healing to have that life immediately. One will still need to be healed in the age to come but the spirit does not die as it can still be restored after being punished for not choosing healing now because one still did the will of God with guidance of the Holy Spirit but one was not fully healed without His gifts