The thing with any investment or business is that, no matter the amount of money you have, it is always good to start small and grow over time (don't test water depth with both feets). Because you are entering a new market and you need time to understand the market. Your job will stand as an insurance for you, in case of any loss. So keep your job, continue investing in crypto and growing your portfolio until the money you make from crypto is more than enough to pay for your lifestyle and also save. Then only can you quit your job.
I totally agree. You should not put all your eggs in one basket, you need to diversify the risks. It's better to start small, and later, if things go well, then dive deeper into the business.