I would just get back to fool proofing. I bet it will come back quickly. LG really is just all about volume and repetition. I wouldn't be worried about it. If you start doing a couple games a day (or more) I bet you'll be fine.
Good stuff here guys. You hit on some things that I hadn't paid attention to. I'm also guilty of not really fool proofing so I've missed out on the benefits of repetition and picking up on when it's beneficial to split.