I'll preface this by saying that I'm rather new in this "LSAT studying process," but from what I understand, further practice will make it such that you feel more comfortable with time constraints. You mentioned having a solid understanding of the fundamentals which is a wonderful first step. If I were you I would spend these next seven weeks focusing specifically on the questions you miss. Spend time determining the why behind correct AND incorrect answers. It takes time and the returns may feel rather small at first but over time you'll become more and more comfortable with the content overall and you'll notice yourself moving through the questions even quicker.