I've been practicing for the LSAT for a little over a year now -- but only a little bit per day. Once or twice a month I'd do a section or two. A month ago I began studying with some intensity, and I slowly pushed my score up from the mid-150s to the mid-160s. But over the past week, I've begun scoring in the 150s again, and it just seems to get worse. I did LR questions that I had done a year ago by covering my circled answers -- questions and sections that I did amazing on back then are ridiculously hard now. I can barely even finish reading the stimulus before I lose concentration -- or I have to reread it a bunch of times, and even then it's still hard.

Has this happened to anybody else? Any advice on how to get back on track?