Larivy,
my thoughts go out to you! I know how hard it is to cope if you don't get any sleep, or even any time to yourself. Dad has phases of not knowing who anyone is, and of crying over everyone he's lost. In his case, it's often going back to the second world war, and people who were killed in the blitz. The trouble is, he would never talk about the bad times, so we really don't know what happened. If it's any consolation, this seems to pass after a few days.
I hope you're having a good day with your family. Take care,
Love and hugs
Sue xxx