It is not wise to leave your full time job just for trading crypto. As of now it is not stable and unpredictable. Maybe investing needs time but you should not sacrifice your job for it. Its better to keep your job, earn some money, fill in your financial needs and invest your extra money on it.
It is just a matter of taking risk and how well you are going to do bitcoin and other cryptocurrency, I do have a lot of friends doing full time here and never regret of leaving their job, that makes me confused as well if I am gonna continue my study or just focus here, well it is my accomplishment if I can do both.