Very good time travel fic, only a little short.
It is told in 2 timelines, so the jump from the past to the future takes time to get used to and it’s confusing. Once you get the hang of it though, it’s enjoyable.
Just after the last battle, Harry intends to travel back 14 days to try and change things, to try to save the ones who died. He makes a mistake and travels 14 years back instead.
The Harry in this time is 2yo, orphaned. Severus is teaching at Hogwarts trying to overcome his guilt and grief for a recently dead Lily.
Harry finds an ally in Severus and then he finds love. Nothing much changes for the future, but Snape survives