My husband cannot follow time or calendar on his own but if I show it to him he remembers and understands. Interestingly he has always LOVED the daily calendar our daughter has given him for years with different beers on it to read and pull off. They discontinued that and she bought him one with dogs. He remembers to check it out each day to read and turn the days which seems to help him in time understanding.
I have also made highly visible notes or words to describe things, like large simple instructions to operate the keuric coffee maker on cabinet above.
I placed craft lettering like Home, Car, Fish above keys on key rack by the front door.
He is in charge of filling and emptying the dishwasher and I got a sliding “dirty/clean” sign on it so we know where his progress is.
Of course I fill his daily am and pm pillbox next to coffeemaker so he knows which to take even if I must remind him to do so and I check to assure he actually does it.
He is in charge of feeding the dogs but gets confused so I measure the feedings into plastic containers for each dog monthly and have them stacked so he can just empty one into each bowl. We hobble along, but I just see gradual changes now instead of major inabilities.