Dropping rapidly SOS

Hello hello, bit of a long shot posting here but I've noticed I am suddenly dropping the ball on all questions ranked in the 150 zones. I am really not sure what is happening. It seems the answer choice I strike out immediately is usually the correct one... It's been like this for about 2 weeks now and I am wondering if theres any advice whatsoever to help shake this or if I just need to drill drill drill the harder level question types and push past it. Its getting really discouraging and my LSAT is Sep 12. Any advice is welcome here- I might even resort to patting my head and rubbing my belly. Thanks in advance!