Pip review form

Not long had a medical and given a short award after having a long award on DLA I suffer from lupus and clinical depression amongst more conditions I have due to having a long term illness that will not get better in time like the nurse who assessed me wrote in the report. She said I would be better in a year with both of my main conditions which is not the case. I contacted welfare rights they said I should be able to fill the review out myself but im struggling to understand the questions as I find it difficult to read them without stress which they know I struggle with filling out forms. I really don't want to go through another medical after the way I was treated before and this form is making me very ill I have until 26th June to send it away. Could someone please give me some advice. As this is putting me under more stress at the thought of having my benefit stopped and having to go through the appeals process which I have done 3 times since I originally had DLA and also the move from IB to ESA undue stress is leading me to think I will fill out the form wrong and I can only think of the negative side of things and not the positive