Thank you for replying. I decided to cancel the MR as I feel it would be simpler to fill out a review, when the time comes, rather than appeal (My sister typed all my answers when I was reviewed so tweaking them for the next review should be simpler)
When I rang PIP, the worker in charge of MR told me that asking for anything regarding your award: the level, the duration length etc will always trigger the MR process. I thought this information might be useful to others in this forum who are considering something like this. Thanks once again.