Dont quit. Bitcoin is very risky to be main job. I suggest you to make your bitcoin as side job. You will have steady income and keep in mind, bitcoin just a bonus from your hobby.
Exactly I am also following the same bitcoin earning it's not stable always it's better to have permanent job apart from you will be having weekends and other free time you can invest for your cryptocurrency interest . Once you find sufficient fund for survival then you can quit job.