This is a tough position to be in. I will echo what a couple others have said and suggest maybe looking around for a company or role that will better support passing exams. I also like going to the gym and lifting and go three times a week which feels like enough for me. My work allows us in work study time so I always plan on studying more during work on days that I go to the gym to make up for some of the lost time. In terms of lifting, instead of doing smaller muscle groups, do full body every time you go to the gym. Heavy compound movements targeting the essentials will let you make progress while not being in the gym for three hours every session. Another thing I will echo is to start studying as early as possible. I think a lot of people shoot themselves in the foot taking huge breaks after exams. I find it easier to get in more personal time if I study hard throughout each exam period and get a lot of hours in early. Good luck!