Face to face assessment risk to health

I am very concerned that even a home face to face assessment for transfer from DLA to PIP will be a risk to my health, and after talking to my partner on the phone Capita said they would consider doing solely a paper review if I sent them a letter from my GP confirming she felt I was at risk. I did this but after a few months wait have been sent another appointment for a home face to face assessment. Can anyone tell me where I stand now? My application form was filled in very comprehensively with many support letters so I should qualify for both higher rates. I am in ESA Support Group and have received DLA since 2002.

Thanks Gordon, I will get my partner to ring Capita next week to ask what has happened but I fear they will say they have decided I need to have a face to face nonetheless (I was put in ESA support group without the need for a face to face assessment so not sure why this is different?.
I am very anxious about having been given an appointment for a home assessment and my CFS/ME symptoms have been very bad since I received the letter yesterday, so may I ask you a further questions which may help alleviate my symptoms over the bank holiday? If they do insist on me having a home assessment what happens if I am not able to answer all of the questions due to my fatigue/brain fog/anxiety/possible panic attacks? Will not being able to answer all the questions affect my chances of getting a good award? How much weight is placed upon the face to face assessment as opposed to the filled in questionnaire? I am confident that following the guidance given on this website my questionnaire is filled in very well. I may be able to push myself to answer all the questions but this may result in a deterioration in my health needing several weeks recovery time, so I am unsure whether to do this or not. Can you also tell me how long the assessment takes and if I will be allowed to take a break? And will the HP be able to view my questionnaire during the home assessment? It says in your guide that they cannot access PIPAT during a home assessment.
Thanks so much for your help

Thanks Gordon, that's very helpful. Its sounds like, if I do have to have the home assessment, its in my interest to answer all the questions if I can, even if this results in a worsening of my condition afterwards. Do you know to what degree it will be detrimental to my outcome if I don't answer all the questions? Do you know of other people who have not managed to answer all the question, for example due to severe CFS/ME, but have still received the full awards based on their paper questionnaires? Do you know of people who have been allowed to have just a paper based review for reasons similar to mine (ie risk to health) and who have been successful in receiving higher level award? I am just trying to work out if its worth trying to push again for a solely paper based review or if actually this is not ultimately in my best interests. I am also trying to work out how much to try to push through my symptoms during the assessment so that I can complete the questions, even if it at the expense of my health. From the points system, I should qualify easily for both higher levels and I want to make sure I get this if possible.