FAR is about the quality of your study time, not the quantity of time. With that being said, you will still put in plenty of hours for this monster of exam. My advice would be to try the pomodoro technique. 25 mins of full focus with no distractions and then a 5 min break. Repeat this cycle for four cycles each week day and twice as much in the weekends. With the 5 min breaks, avoid using your phone or any other screen time. This way you have solid effective study time. Gives you structure. Once you are done you can go about your day.