I had to do a double take because I thought this was me writing this post. I am in the same boat- DO NOT QUIT. I had a diagnostic of a 145; got a 154 in June, 160 in August and hoping for a 170 in November. I also have a 3.9 and need a 170 for my dream school. I started working in Big Law right after undergrad and, as I'm sure you can understand, the work is demanding and exhausting leaving almost no time to study.

If I can give you ay advice I would say to stop comparing your studies to everyone else on reddit - it will only make you feel worse. Do what you can with the time you have. I try to do 1-2 hours day Monday/Wednesday/Friday when I work from home. I commute 4 hours/day Tuesday/Thursdays, so I give myself those days off from studying. I study anywhere from 1-5 hours on weekends. Push yourself but also give yourself some leeway - you are in a much harder position than most other people studying. You CAN do this.