We submitted my 79 yo father in laws n-400 finally, after him having a greencard for 6 years. He has dementia, depression and is unable to remember much. He's been in the states for almost 2 decades but has not learned the english language enough to communicate day-to-day so him taking the english speaking test is out of the question. His doctor completed the N-648 form detailing the "medical codes" as well as his current disabilities.
We've retained an immigration lawyer to ensure the process goes as smoothly as possible. She mentioned there is a lot of fraud with the N-648 application and many get denied so she suggested he learns the basic 20 of 100 questions in his native language, just in case. I told her it'll be very difficult for my father in law to learn the language but she kept repeating, "do anything to have him learn the 20 questions, just in case".
I see him 4 times/ week and I know he's unable to retain new information. I'm not sure how the learning will go. I printed him the questions on index cards and told his wife to begin helping him study but I'm unsure of the outcome tbh.
Just wanted to share the beginning of our story on here. Good luck to all who are/have applied. If anyone has any experience with this, kindly share your story if you can. I wish you all luck!