You show me anywhere in 1 Cor 11 quoted below where it says I cannot bless bread and wine and administer these "sacraments" to myself?
23 For this is what the Lord himself has said about his Table, and I have passed it on to you before: That on the night when Judas betrayed him, the Lord Jesus took bread, 24 and when he had given thanks to God for it, he broke it and gave it to his disciples and said, “Take this and eat it. This is my body, which is given[e] for you. Do this to remember me.” 25 In the same way, he took the cup of wine after supper, saying, “This cup is the new agreement between God and you that has been established and set in motion by my blood. Do this in remembrance of me whenever you drink it.” 26 For every time you eat this bread and drink this cup you are retelling the message of the Lord’s death, that he has died for you. Do this until he comes again.
27 So if anyone eats this bread and drinks from this cup of the Lord in an unworthy manner, he is guilty of sin against the body and the blood of the Lord. 28 That is why a man should examine himself carefully before eating the bread and drinking from the cup. 29 For if he eats the bread and drinks from the cup unworthily, not thinking about the body of Christ and what it means, he is eating and drinking God’s judgment upon himself; for he is trifling with the death of Christ. 30 That is why many of you are weak and sick, and some have even died.
It seems to say that the final decision to eat or drink depends entirely on the man himself, examining himself/herself.
There is no mention of a minister or a church interposing itself between that choice.