15 minutes of short film brainstorming #1

So me and a friend of mine have a pact to make a short film together so I gotta get brainstorming. So far I have...a title. I like the title and will not change it :P

Alone in the Moonlight

About dementia
Unclear that main character has dementia in beginning

ideas on how to demonstrate

have the main character ask repeated questions
have post-its all over the place that have phone numbers and other reminders on them
have the main character talking about holidays that are out of season based on calendar and/or how outside looks through a window
maybe it's one long conversation cut up to look like multiple
try to make the movie dream-like

Other possible characters in film

Child of main character
Care taker of main character

Main character is unsure why they're there

Maybe character realizes they have dementia during it, like they journey with the audience to realize it
Maybe the last scene is just like the first scene
Possible topics to cover in conversation between main character and other(s)

job of other(s)
time of year
holidays
memories of long ago

childhood of both main and other characters
college time of both main and other characters
parent(s) of main character
sibling(s) of main character

relationship status
education status
health
maybe have the conversation be very vague or muffled

Child of main character

Concerned
Tries to be patient
Takes note of inconsitencies around them
Tidies out of anxiety
a little prim

Caretaker

Kind
Patient
Respectful
Insistent
Tidy

Main character

has dementia (maybe hint at cause being alcohol?)
male (I could easily be swayed female)
short term memory very bad
has better memory of things long ago
still knows who child is (assuming we have this character)
still tries to do mental things like read books and do crosswords
wears glasses, but loses them

Maybe no real plot at all and make it more dream like and vague

would require more work on my friend's end, but maybe she's up for it? (Are ya?)
maybe POV filmwork
series of very short scenes

post-it notes
caretaker appearing and vanishing
child appearing and vanishing
seasons seeming to change constantly (or maybe not at all though the calendar has changed)
half-read books
half-done crosswords
clutter (caretaker and child tidy)
constantly lost glasses (blurry shots?)
half-eaten trays of food

Boy I need to do another one of these because I am not ready to start writing. Or maybe I should just start writing and see what happens. What do you think?

(Prompt by me but also kind of Amelia Sacco)