Good afternoon Wigster82,
you could ring or write to the dwp and let them know that your health needs have change and let them know you have updated medical letters once the change is reported the dwp will write and let you know how it will affects your pip.
when there is a change in circumstances the dwp may look at the whole award again you could lose points or gain extra points and it could affect your current award.
kind regards
katherine
Nothing on this board constitutes legal advice - always consult a professional about specific problems