The phrase "and so so often" is not standard in written English and may be considered incorrect.
It could be used informally to emphasize frequency, but it is better to use a more conventional expression.
Example: "She visits the museum and so so often that she knows the staff by name."
Alternatives: "and very often" or "and quite frequently".
"We hear a lot of: 'Come on, there's more important stuff to worry about than cat-calling.' But we've had so many reports of a woman ignoring it, or saying please leave me alone, and then so, so often: 'Hey sexy, hey baby, hey darling' turns in a second to 'Slut, whore, bitch' – and then being pursued.
But here's why The Lone Ranger is one of the oddest movies I've ever seen: I've never seen a movie bounce back and forth so quickly and so often between horrifying violence and campy, unironic humor.
He cried and screamed, so loudly, and so often, that we were convinced our neighbors would call social services.
That's why they're exciting and so often moving (and read so widely by adults).
They sounded like people who had been hit by a sledgehammer, and they were hit so fast and so often they couldn't account for the reason behind it.
And, as so often and so mysteriously occurs in psychiatry, having someone else there who "gets it" was deeply comforting to the patient.
The risk-addicted builder has been up and down so often, and so violently, over the years that his career of half a century in New York City real estate has the dizzying topography of the Himalayas.
It's such a shame that the Queen is at bay so much, and displayed so often in terms of brow-furrowed silence and worry.
In an essay in the February issue of Natural History magazine, he tries to explain why Darwin is so revered and Freud so often reviled.
She noted that it only recently hit her that their time of being so close and together so often would soon come to an end.
