Sure, I would say it happens quite a lot (certainly while we're infants). My only point is that to be conscious is tautologically to know that one is conscious

Sure, I would say it happens quite a lot (certainly while we're infants). My only point is that to be conscious is tautologically to know that one is conscious. And knowledge is dependent on having (= being able to recall) a memory of something. Yes, colloquially there are instinctual forms of 'knowledge' where you get some vague sense something must be true (despite having no information to determine one way or another), but I'd suggest that's probably a misuse of the term.