Generally speaking the lowering of the national standard is done by decree. To my mind it’s the same issue as flying the flag upside down.
When my father, who was a veteran, passed away, I wanted to lower the flag but didn’t. He’d have been most upset if I had and there was no direction to do so.
Thanks for letting me know. If I had owned my flag then, I would have probably lowered it for your dad and would have upset you. :(
God rest his sweet soul...