MRS J
Yes, you can request an MR but I have to warn you that we have not seen much success, certainly at the MR stage in regard to challenges for just the length of the award, you may have more success if you have received the Enhanced award for both components, so you need to be prepared to take this to appeal.
Our PIP MR & Appeal guide explains the process you will need to go through and the Submission document has a template request that you can use.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems