Tracey I am sorry that you are in this frightening position, but do not give up hope. I think you have the DNRS DVDs. If you look at the many video testimonials on Annie Hopper's site you will find some where people were desperately ill and unable to live in their home but recovered. I wonder if it might help if I give you my take on the DNRS as I don't know if you have tried it or not yet.
The course might seem overwhelming but I do not think it has to be done religiously. If you try and address as many of the MCS symptoms, thoughts and behaviours as you can with the pattern break technique,each time getting a feeling of joy or peace or relaxation going for a few moments-a big artificial smile also helps- then you will eventually begin to notice reactions get a little weaker . This will encourage you to keep going. You still protect yourself from exposures that are too much but you gradually notice they get less and less.
The feeling of joy, peace or happiness, even tearful bittersweet happiness, conflicts with the brain pathways that produce MCS symptoms and weakens them. Annie hopper does a very good demonstration of how to go into memories to get in touch with positive emotions.
You do not have to be a slave to the programme if it seems too much. It should be your servant. Just do it as much as you can manage. It is just a tool to help retrain your brain. Anything I felt was not helpful I just left out and it still worked. There must be many ways to retrain one's brain and we are all different, but I hope you might be able to find the DNRS of some help since you already have it. I found it quite amazing that after 7 years of being almost completely housebound this began to work and now, the past few years, I can go anywhere I want. Please do not give up. Find any simple happy memories from before your illness and train yourself to feel the feeling you had then. Feel it and imagine it infusing your whole body and mind just for a few moments. and use this feeling in your pattern break.. For me I felt the power to weaken the overprotective MCS pathways was in the emotion.For a few moments different chemicals or brain pathways are being used.
There is hope. Look at all the video testimonials if you can to encourage yourself and believe in the possibility.