Honestly, the way I see it being new you may even be at an advantage when it comes to the changes. You're not as used to the current ways, and you'll have an easier time adapting to it than others. Pretty sure that's what happened with the jungle change from s1 to s2. The newer jungles actually got better faster, because they weren't as used to how it was in s1.
But I'm in the same boat. About the same timeframe too iirc. (I think I'm sitting at like 98 normal SR wins or something. Still new =/)