Response to Toni's post:
I use shields in my practice as necessary and yes, some babies go nuts when
the weaning process is started.  After years of seeing this, I feel there is
no one right way to do it.  Try again destroying the shield (snipping from the
inside), or slipping it off, adding a finger to suck for a second or two helps
then.  But the key words I think and have found are "gentle perseverence."
The baby is young enough that with repetition I have never found a baby to
not, eventually go onto the breast.   There is no hurry is there, if the baby
is eating adequately, and the mother's breasts are ok, right?   Good luck.

Linda Pincus, RN, FACCE, IBCLC