I've been holding off LGs for now.
Are you holding off on them because you already feel really confident with it? If that's
not the reason you are holding off, now is the time to stop holding off. Many people find this to be the most alien/tricky part of the LSAT when they are just starting preparation (and I was one of them). The good news is, conventional wisdom holds that LGs is the most learnable. That's only true if you start learning, though, and my personal experience has been that it's a matter of putting in the time and practice. Also, think about it this way: on a LR question, if you get stumped, maybe you get that answer wrong but you are starting fresh on the next question. If you end up staring blankly at a LG prompt that may as well be written in Farsi, you're potentially screwed on 5-7 questions on that game, and more on any that follow if you spend too much time on that one. The way to minimize the likelihood of this happening is to expose yourself to as many types of LG as possible, and trust me, there is a ton of variation on linear and grouping games. So start getting after it, now. Seriously. And even after you have done a LG section, go back to it a couple days later and do it again. And again. That's how you'll get good at making inferences, which will help your speed enormously. The PowerScore Logic Games Bible is awesome. Put it to use!
In LR, I would say Assumptions, would be my downfall, its really hit or miss. If you gave me 10, I would probably get 5.
This is interesting, because assumptions questions are some of the easiest for me. On the ones that you are getting wrong, are you able to understand how you ended up getting it wrong, and why the correct answer is, in fact, the correct answer? What are you running into trouble with on the assumptions questions? Have you read the chapter in the LR Bible that covers assumptions questions? Are you pretty much okay on the other types?
I go to bed with a passage of RC and I think I do fairly well depending on the content. If I did a whole section timed, I doubt I'll get to every single question.
Reading Comp is by far the easiest section for me, so I am not the best guy to give advice on it...it just kind of comes naturally to me, but I understand that's not the case for others. I did read a piece of advice somewhere, though, that was helpful: try to find some way to become interested in every passage, regardless of content. That issue is a very real one, for me too. Throw an article regarding biology at me and my eyes roll back, so some of the RC passages are tougher than others for me. If I can somehow become interested, though, it's easier. Something else that works for me is marking up the passage. Not going overboard, and not doing it in any systematic way, but just underlining things that seem important, annotating certain lines with stars or exclamation points in the margin, or just making quick notes. More than anything, this helps me stay focused and read actively, which pays dividends when I start answering the questions, even if I never "use" my annotations while doing so. Do full RC sections, though, timed...just doing a passage before bed isn't going to cut it.
I try to spend at least 3 hours a day. I could use help in every aspect of the test, just don't know where to start. And how many hours should I put in?
This is a tricky question, especially given your current level and the fact that there are, what, six weeks left until the test? You definitely don't want to overdo it. I was doing prep tests 5 days a week, hitting the mid to upper 170s each time, and then BAM, three in a row in the upper 160s. It was really frustrating and more than a little scary for me. Turns out I was just really overdoing it. I cut back to two a week, and I was right back where I was before. I mean, I may have run into a string of prep tests that were just, for whatever reason, tougher for me, but I tend to think I was just overloading my brain, which in turn made me sloppy. What I'm driving at is you've got to work as much as possible without overdoing it.
I also definitely check my answers.
Great...this is very important. Are the correct answers making sense to you, and are you seeing where you went wrong?
The trick here, I think, is to study smarter, and not harder. My overarching piece of advice to you would be to develop some sort of structured study plan for the next six weeks, and build that plan around taking 2-3 scheduled, timed prep tests weekly. I do mine on Wednesday and Saturday, and on the other days I either drill LG sections I have already done, or do a new LG section or new LR sections (from a "parts" prep test that I won't be using for a full simulation). I really get a sense that you're lost at sea with this, and if you can develop some sort of schedule, it will help you focus in. That schedule, as I mentioned, should be built around prep test days, and should focus on your weaknesses, strengthening them bit by bit.
Get after those LGs, though, friend...you don't want to wait until two weeks out to start on them, trust me.