What's this .. ?
It seems pretty straightforward. Go to Mass on Sundays and Holy Days of Obligation. If you miss Mass on one of these days, go to confession. I was being a little facetious in my reply that it’s okay if you don’t feel like doing it, just as long ad you do it.
Which means they must go to Confession and receive the Sacrament of Penance worthily and do the penance before they can receive Communion worthily.