Most likely not but Five still regrets missing so many chances to be with his family. Time traveling when he wasn't ready it's something caused by his own hubris, not his father's cruel meddling. We really are our own enemies.

"I have nightmares when I'm still awake, Klaus." Is the closest Five can get to admit he somewhat forgets where he is and that certain situations trigger his PTSD. But the point is that, yes, he will try his best to help Klaus handle them. "Maybe ours will cancel each other."