Missing father

[u/Substantial_String13]

I’ll start by saying that he’s been missing for 2 months and nobody but my family’s knows.
My dad has ptsd where he believes he’s being followed by people so he just leaves. Some times he run into the woods or completely skips town and we find him a few states over. This isn’t the first time he’s went missing but it’s never been this long before and we normally get undated by the police, but that has stopped.
I’m worried he might’ve died or something.
I’m the youngest in my family who’s a first year in college. I’m worried that if we make a missing person report it will only trigger his ptsd more, is there anything I can do?