Hi Heisenberg
PIP reviews have not been suspended, DWP have been concentrating on new claims.
You could apply for a change of circumstances, if successful your claim would be backdated to the date of your phone call.
In my opinion you should treat a review as though it was a new claim therefore it makes no difference contacting DWP and reporting a change of circumstances, you still need to complete a form as though it is a new claims form.
Gary
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
