How to improve on LR

#Help The LR section has really left me baffled. My average score per LR section was -2 while I was PTing through PT50s and PT60s. But in the series of 70s, it has drastically dropped to -5. I do notice some differences when I do more recent PTs but I can't figure out what. I've approximately a month and a half. How do you guys think I can get back on track?

Any advice or tips would be appreciated.

Thanks!