Why think about investing if the finance is still unstable this will be a problem in the middle of the road and until whenever your investment will not run smoothly, but it is true that when they have earned additional income or a sufficient monthly salary then they can set aside to invest in bitcoin.
Well i don't think a serious person with an unstable income will want to go into investment without looking for an alternative source to fund his investment, it must have been an unexpected situation that has put that person in a tight bent corner beyond his control ,which has led to unstable investment.
Investing in Bitcoin using the DCA method makes it very easy for anyone that is interested in investing , no matter how little your income is ,you still chose to invest either daily, weekly or even monthly,as long as your are comfortable with your income and it meet your demands .