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Just quoting in Puddles the Monkey so she can move the thread if needed
Im taking this course in September and hve heard the same. Tat it is one of the harder specifications. So I have started preparing early and currently do an hour or two a day minimum.
Didnt take triple science so I cant comment on that point. So far Ive found a significant amount of thr material is building on top of what is taught in GCSE. Although, non of it so far seems like a huge step up.
Did OCR B a couple of years back. It wasn't as bad as people make it out to be. Yes the individual investigation is a bit of a slog but you have a whole lot more control over it than the coursework on OCR A. I preferred this board overall (did AQA for a year before)