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.
If you have the funds and the knowledge, I would not classify it as a bad decision. However, the OP could have made a smarter decision which I want to believe he did, by testing his trading skills and how fair it is for him before quitting his job. However, it is a good decision if you have the bucks to trade with as there are lots of opportunities if you know what you are doing.