which can only be possible when there is a set aside emergency fund to take care of other basic needs because without having alternate source of income one may be tempted to sell the Bitcoin when it has not attain the expected performance.
You don't need an emergency funds to take care of your basic needs, because emergency funds is to take care of any unforeseen circumstances that plays out during your bitcoin investment
Don't misunderstand the purpose of setting up an emergency funds. Your basic needs should be taken care of from your income before you can use the leftover which is your discretionary to invest in bitcoin and build up your emergency funds. Your emergency funds should only be tampered with when there's an emergency that must be taken care of so that the does not worsen the situation on ground. Like losing your job, the roof of your house was pulled of by storm and severe accident cases.
You don't need to have an alternative source of bitcoin before you can hodli your investment for long as long as you are using the right amount of money from your discretionary income to invest in bitcoin, you will be fine. Having an alternative source of income is to boost your financial strength so that you can be progressive in life and also use the chance to increase your weekly DCA amount in order for you to reach your bitcoin target faster.
Life is filled with so many uncertainty and I believe that's why emergency funds are being set up atleast to tackle some of those situations because if you as an investor fail to have such majors and some of the unplanned issues of life hits you, you will definitely have no other options but to temper with your Bitcoin savings which is the first steps of not being consistent and stable with your Bitcoin investment.