NCT do run specific Refresher courses - this would suit your needs much better than the standard course. They are currently run via Zoom but both the course leader and the group will be local. They can be a little hard to find on the website unfortunately and I'm apparently not allowed to post external links here but there's a course numbered C3823 that might well suit. It will be run by my lovely friend Sandra who is also found at birthconfidence. com and pre-pandemic also at St George's.