I haven't reviewed LR foundations for V2 but I did attend a 7sage forum where they said LR is different but LG and RC are the same in V1 and V2. I would say that if you are planning on taking the April or June LSAT, do not skip the foundations you have not covered in V1. Only skip those you have already covered. If you are planning to take the LSAT at a later date, then it won't hurt to go through all V2 foundations.

I started the core curriculum (version 1) from October 1st and finished CC about 2 weeks ago. I take a practice test every weekend to see where are my weak spots. I then make a study plan of what question types I need to drill for that week for improvement. Mainly focusing on LR and RC this week while still drilling LG so I do not become out of practice. I work full-time so I try to study after work for 2-3 hours every night.

Hello! Make sure you are understanding why each AC is wrong. Use LSAT Hacks website for free written explanations for each AC (also the new 7Sage site has this too). Use a wrong answer journal or your analytics page to see what question types are giving you trouble. Take a few days or a week off from LSAT. Seems like you may be facing burnout by taking too many tests in 2 months. Also, you could do untimed question type drills to practice reading questions thoroughly and not making those easy mistakes. 10 questions per untimed drill (ex: 10 for flaw, 10 for NA, 10 for argument part). Hope this helps.