In a way, this is reminiscent of Kurt Vonegut’s Slaughterhouse Five. Billy Pilgrim, the main character, says he is ‘unstuck in time’ and travels back and forth from WWII experiences to present time to the future and his death.
I thought it was an interesting story and a decent movie was made of it.
Yes, quite similar.
Also similar “The Time Traveler’s Wife”...............
https://en.wikipedia.org/wiki/The_Time_Traveler‘s_Wife_(film)
wasn’t that Valerie Perrine in there? Oooh la la!