Just sounds the same as the TOPS crap they do (treatment Outcome Profile System).
Yoy know how you feel, and unless your keyworker is the first person in the universe to be able to tell ehat another person feels like, she doesn't, so shouldn't have you manipulate the figures.
She sounds shit, if you're not happy then change.
I've had the same crap about reducing from mine, and in the end I had to be really, really firm and say NO, this is not what I want.
It seems they think that people on long term scripts need 'encouragement' to start reducing, but some of them stop 'encouraging' and start enforcing.
Any reduction should be your decision, and 5 mil is quite a lot in one go, most people do a ml or two at a time, if they want to reduce that is!