Similar situation here. I will be 80 in January, husband turns 93 in a couple of weeks. His short term memory is almost non-existent, but he is cheerful, loving, not abusive and has a great appetite! We have a neurologist whom we see every 6 months (or his Physical Assistant) and a geriatrician (or her Advanced Practice Nurse) whom we see on the other 6 month schedule, which means we are seeing someone every three months for a condition that can only be monitored, not cured. I prefer the geriatrician (and she spends 45 minutes with us) because I feel she is more holistic. Additionally, the practice has a social worker on staff whom you can call with questions and for support.
My husband developed hospital worthy UTIs twice in the past three months, one of which went to sepsis. I am inclined to transition to annually with the neurologist because I am realizing that he will not likely die from Alzheimer's, but rather, conditions that affect the very elderly.
The loss of memory as you say is the saddest, but he still remembers me and our sons. Our 5 grandchildren he mostly can bring up, but as the afternoon wears on, sundowning clouds his cognition and he can become more confused. I will keep him at home no matter what. He's still witty and happy to be alive. No country for old men, to be sure, but he's not ready to quit, so neither am I. Nor, it sounds, are you. Carry on bellabella1!