The concept here is very interesting, and the pace isn't bad, but you need to get a beta--I'd volunteer, but I barely have time to write, let alone edit anyone else's writing. You've got some random capitalisation going on here, and you keep breaking tense, as in this:
"It has been a month since Harry’s birthday and Harry and Slyther were now staying together in a small cave in the same woods that they found each other."
"It had been a month, and Harry and Slyther were staying together in a small cave in the wood where they found each other." would be a better way to write this sentence. You've started writing your story in past tense, and you really have to stick to that.
Do continue, please--the idea of Harry and Ginny meeting earlier has been done before, but your particular twist is original and could be very interesting. I don't believe I've seen a story before with Harry waiting a year to be with Ginny, rather than her starting school early to be with him.
Author's response
Yeah I know I could use a beta, but I've had a few already who've let me down so I gave up. Thanks.