Disclaimer about time travel by Ancient Greek style gods;

Time travel < Prophecy

Deities/Supernatural things with the power to move through time could see a host of parallel futures, even see ones in which major prophecies didn't take place, but they couldn't use their power to change squat in regard to the main 'true' timeline, nor would them seeing a certain future put it in stone.

Only Oracles did that, and you needed more than a time travelling god to change that.