Teresa
You can report a change by writing to the DWP office dealing with your claim, if y ou do then send it using a Tracked post so that you have proof of delivery.
Doing so will result in you receiving a new PIP2 to complete and it is almost certain that you will have a face to face assessment, the new Decision, whatever it is, will superseded your existing award.
Are there any issues that argue against your walking distance, for example do you go shopping? How do you manage GP and Hospital appointments?
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
