Regular does not = frequent.
But they are frequently confused.
When people moan that some of us are too aggressive about their misuse of words it's examples like this that should pull us back.
A promise that something is regular could mean that it gets done once a decade, on the third Thursday in July.
But frequent should mean it gets done often. How often is a whole different kettle of ball games.
In either case it means very little unless quantified.