Etymology of "overweening"

I was quite astonished that the origins of this word
are not recorded as being what I assumed they were
through logical deconstruction.

The "overweening" personality is described "arrogant",
yes, but I had always assumed the origin was due to
the literal situation of the child simply being suckled
for far too long. I took the term "ween" in what seemed
a perfectly sensible etymology.

Thus the personality develops the traits of getting
what it demands, being sexually fixated and egotistical
as a result. Thus it suffers separation anxiety, and is
prone to addiction with an oral fixation.

Anyone thoughts or research, welcome.