Hi YardenUK
PIP review forms are typically sent out up to a year before the award end date so that there is plenty of time to process them. So your new award end date is March 2024, and you have been sent one ten months before the end date. I'm afraid there is nothing for you to query with the DWP. This is normal practice.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems