I've been working hard since February this year going through the LSAT trainer, then Lawschooli's LR program, then I saw the light and did the CC here. Over the last 4 months I've seen an increase of about 4-5 points to a 159-160, but I know I can bank at least 5 more points by foolproofing more and shoring up my LR flaws (which are immense lol).
I plan on using Cantgetright's post CC guide (I'll post the link below) and hiring a tutor but can people in general go from -7-10 in LR and -7ish in RC to -2-3 between now and the April test? That's about 4 months for a 10 point improvement and easy points from foolproofing.
Cantgetright's excellent post CC video: https://classic.7sage.com/webinar/post-core-curriculum-study-strategies/