Hi there,
the same thing happened to me last year at 68 years of age. I had been on DLA indefinite for many years and missed out on the cut off point by less than a month.
DLA is different to PIP in that it is not awarded due to the condition, but how the condition affects the person. Like you I was extremely anxious, but did a lot of reading about PIP and how to fill out the forms for maximum chance of being awarded and read posts from others in the same situation.
I find it very difficult to write for very long due to the pain from arthritis, so a friend typed the answers to the questions on seperate sheets of paper and I wrote on the forms please see sheets attached. I went into a lot of detail, often repeating myself, leaving nothing out and answered every question.
I was dreading the f2f and was extremely stressed leading up to it. It was a lady doctor who did my assessment, she checked my identity and then said that although she was a doctor she was not there to assess or discuss my health issues, she was only interested in how they affected my day to day living.
To be honest, she didn't ask many questions at all really. We talked about when and who diagnosed my different ailments and she knew one of the doctors We talked about cooking, bathing toileting but not a lot else. I had to walk a small distance from reception to her room, but couldn't do that without hanging on to my husband so she probably detected how good or bad I was. I had to stand a couple of times as my back was starting to lock and she even found me a pillow to sit on.
She asked me to move my head up, down and sideways, which was difficult and checked the strength in my hands, then it was all over. She said that any questions she had not asked, she could take from my notes attached to the form.
She did say, that after reading the notes, she was very surprised that I had been selected to have a face to face and that she would be advising the DWP that my problems would only get worse and not better. I eventually had the award letter and received the higher rate of care and mobility.
When I received the letter saying where the assessmnt would take place, I was shocked as it was almost 40 miles away, so I checked online for the nearest centre to me and my husband rang them and changed it, but you can only do this once so make sure of the facts before you ring them.
We all understand how anxious you are and I was one of the lucky one's who had a good assessor. Ring them to get the ball started, good luck and come on here to talk and ask questions, we are always happy to help if we can. x