Again (Let's Do) The Time Warp

Time-Travel fix it AU where Harry goes back in time. HE ends up in his 11 year old body, but in the same YEAR as his parent's first year. So he has to redo school, fix the shit between Lily and Snape (while also not preventing his parents from hooking up) stop his Dad being a colossal twat, stop Sirius from being a colossal twat, stop Pettigrew from being an evil twat, and maybe also do something about Voldemort except said Dork Lord has no idea his greatest foe is at Hogwarts and it's Very Inconvenient to go to him, while stuck at school most of the year.Needless to say, the Chosen One has run out of fucks to give. WARNING: INCOMPLETE AND ON INDEFINITE HAITUS.