I'd sure leave it alone now....you've added some sugar, it will ferment out unless you've surpassed the alcohol tolerance of your yeast, or stabilized somehow.
Also, a cider often takes 6 months or more to be really good, so just hang loose! If it tastes like Rocket fuel now....it's not anything like it'll be in a few months.
Seriously. I'm here for BEER
It's Not The Size Of Your Rig That Counts....It's How Often You Use It.