We've discussed going back on the meds. This may be difficult for some to understand, but my DH has actually wanted the disease to progress as fast as possible to its inevitable conclusion.
He has always said that he would never want any medical treatment that extended life, even when medical treatments worked. This is consistent with the medical directive that he put in place. He had advised all family members and his doctors that this was his belief through the years -- and he had even refused to take medicine for his high cholesteral. DH felt that each person had the right to make their own choices, but that he personally would not ever fight to delay a terminal disease once God had indicated it was his time. He told everyone that he would never want to be a financial or emotional burden, and that the faster a terminal disease progressed the better it was for a family. DH was a supporter of the choice of legal, assisted suicide and even had objected in the past to the fact that an Alzheimer's patient could not by definition qualify as making an "informed consent" under any of the proposed statutes. (Frankly, I suspect in my deepest heart that he had planned to eventually take his own life, but that the disease quicly took away his ability to plan a suicide. I locked his gun cabinet and eventually sold his gun collection, and he never noticed.).
I fought with him to get him to take the drugs for the first few years, when he still was able to function well enough to be somewhat independent since I wanted our kids to have their Dad as long as possible. He reluctantly agreed that as long as he could be independent, he would not be a "burden." At this point, he is no longer able to be alone and we had agreed that this would be the trigger to stop any and all treatments. Since DH had expressed himself so clearly on this issue through the years, I know that he would have hoped for the fastest progession of his disease and the earliest release possible. The trade off is that the harder stages will come more quickly too. Others, of course, may be trying to preserve their loved one's level of functioning as long as possible -- as I did, during the earlier stages.