[@Prince of Seraphs]

Ok so this is the only way I can think to make it work Chronos goes back in time after getting released to the golden age taking over his past selfs body but can't kill Zeus because he won't have any reason to to back if he dose so instead sends his energy forwards in time to create a child to help free him in the future although as you pointed out this make time travel next to useless for the demigod of time so instead you give the character fairy tale style time magic able to speed up the reverse the effects of time on objects because being able to slow down, speed up or freeze time would be op.