Greetings, and welcome to the forum!
From what I heard about the tradition of the Eucharist and from what I read on this forum, there is no universal rule about the frequency with which we should go to the Chalice, and neither there is a consensus that the Holy Confession must precede the Eucharist each time.
It seems to me that it is more or less a tradition in the Slavic world to partake in the Eucharist only when you have confessed your sins to the priest the day before, or even in the early morning prior to the Divine Liturgy at which you go to the eucharistic Chalice. Some bishops and priests in Russian and Ukrainian jurisdictions even go as far as to say that unless a person has gone to the Holy Confession the day before the Eucharist or the morning before the start of the DL, this person's partaking in the Eucharist will be "unworthy" and harmful. When I was in Ukraine one year ago, I heard priests say during the DL, literally, this: "(Chanting:) With the fear of God, faith and love, draw near! (In a speaking voice, loudly:) People, please, ONLY those who prepared themselves will be given the Eucharist." And by "preparing themselves," they mean - confessed to them yesterday or earlier this morning. They remember those who confessed, and if a person whom they do not recall confessing approaches them during the Communion, they will refuse.
On the other hand, in the Greek world, there seems to be no such mandatory, compulsory "tying" of the Eucharist to the prior Confession. If I understand correctly, this is based on the notion that the Holy Confession and the Holy Eucharist are BOTH Holy Mysteries of the Church and they act on the person each on its own merit. My parish priest always reminds us that it is good for us to go to the Holy Confession "regularly," but there is no custom in my parish that a person must confess immediately prior to receiving the Eucharist.
As far as the frequency goes, it cetainly is a very personal, individual matter. Unfortunately, I do not recall the name of this writer right now, but I read a while ago in a sermon by one Russian Orthodox priest approximately the following: "When should we go to the Chalice, how often? It's always a matter of debate, but I only know this. Zachheus, a sinner, a dishonest tax collector, saw Jesus and immediately invited Him in his house; he did the right thing! But the Roman centurion, about whom the local people reported that he was "worthy," said to Jesus that he was not worthy to receive Him in his home; and again, he did the right thing! So whether we go to the Chalice with fear of God, faith, and love, or refrain temporarily from going because we feel the burden of our sins and our unworthiness - we might be doing the right thing. There is no universal rule, therefore, when to commune and when not to, and there should not be any debate about the frequency of partaking in the Eucharist."
Best wishes to you and your family,