Rest means rest. It also means not facilitating the un-rest of others.
That said, I would be a hypocrite to say that I don’t violate this every single Sunday.
It’s an EXTREMELY difficult discipline in this day and age. But if I (and anyone else) really chooses to observe it, it’s certainly possible to get all the housework/shopping done before Sunday. Problem is, none of us choose to come home from work and clean the bathrooms. We leave it for the weekend.
But I suppose it can be taken to an extreme. Is watching TV on Sunday sinful? I mean, someone’s working at the station, monitoring the programing, loading up commercials, etc. Even EWTN. Is that violating the day of rest?
My advice is to confess it as often as it happens. I don’t think anyone is going to be consigned to hellfire over it, considering the realities we are faced with, but with frequent confession, you will find yourself observing with greater devotion, and in different ways.