phoenix
I can't tell you not to notify the DWP but they are not overly bothered if the claimant does not tell them of a deterioration, doing so will result in a full reassessment of your claim, new form and almost certainly another face to face.
One thing you might want to consider as part of your decision is whether you would reasonably score the extra points you need for a higher award.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems