I usually score anywhere from -2 to -1 on RC sections, and I've recently started scoring much worse (-6, -4, etc.). Any insight as to what's going on would be much appreciated!

I started studying in September but had to pause mid-September to early November for work. I'm aiming for a 177-178, but I can only manage -1 on LG, -2 or 3 on LR, and -1 or 2 on RC and have been at that level for two weeks with no improvement. Should I just give up on January? I'd like to hear from people that have been able to get past a plateau.