Hi Haseya
You can contact the DWP and tell them that you wish to put in for a change of circumstances. Now, they may halt your current review process and send you out a new review form - or they may tell you to send in the additional information and add it to what they have. Best to get their take on it first. Keep a record of whatever they say and then act accordingly.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
