I think a court would reason that if a phone is being used hour by hour, it's not likely that a person would "forget" that passcode suddenly, and there is a more simple explanation of what's happening.
Eh. I have forgotten important passwords and lost accounts that I had used for years the next day. It absolutely happens.
I have too. It's very rare but really disconcerting when it does happen. Human memory is pretty faulty.
I have too. Staring at my keyboard in complete disbelief that a password I used hours before had fallen out of my head. Still amazes me that I can forget things so easily
I've done this multiple times with SSH key passphrases. Used them for months until it becomes muscle memory. And then one day just can't it at all...