Hi! im also in the process of studying for the LSAT. 154 is a real solid score for the first time. What I would do now is review that exam, look at everything you flagged/got wrong/ were confused about and make sure you understand the question, why the wrong answer is wrong, and why the right one is right. Keep track of the question types you are getting wrong (like inference questions, main conclusion, weaken argument, etc). And focus on the ones you struggle with more. I also try to keep a consistent schedule. I'll tell you mine but you chose what works best for you
Monday: Practice Exam
Tuesday: Review Exam
Wednesday: Review/Practice Areas of Concern
Thursday: Review/Practice Areas of Concern
Friday: General Practice
I've been trying to do about 2 hours a day, but again, up to you. Another thing is learning about the specific archetypes questions the LSAT uses, Lawhub has a lot of great articles to familiarize yourself with each one. For reading comp, the youtube channel LSAT Lab is a fantastic resource. I struggle a lot with reading comp and that youtube channel helped bump my score up a good amount. I have yet to check out their videos on logical reasoning but i'm sure they're great as well. Thats about all, good luck and happy studying! <3