>to avoid repeating
> the severe adrenal suppression again...

Aren't they now totally and permanently suppressed? That's why you take
prednisolone in
the first place. It started in the pituitary but after long enough time on
steroids the
adrenals will no longer produce anything.
You definitely are on a slow taper! Practically geologic time! I'm not sure what
being
hypopit has to do with needing such a pace. I'm hypopit too and dropped from
30HC to 5
pred in one day with no drama at all. I was surprised how easy it was. I think
it was
because my endo said there was no way as a secondary that I needed more than
20HC/5
pred daily and I believed him.... if I were showing signs of Cushing's I would
not linger for
a moment anywhere above a true replacement dose. Only my opinion: it seems silly
to
take two months to get from 6 to 5.5. Just do it! Every excess molecule of pred
is
contributing to the damage. Agreed: all this is unsolicited advice and quite
likely useless.
Just my 2 cents... Jim