DCA is also not for those who do not have stable finances, it is difficult to do DCA if your finances are not stable so I suggest you have a stable income first out there then you can do DCA happily without any obstacles.
It is very good to have a stable source of income but that mentality of saying that one must have a stable source of income before starting Bitcoin investment can be very wrong because with the dca strategy we can be accumulating Bitcoin whenever we have a discretionary income and at the time be working on our sources of income, it is wrong for us to see Bitcoin as burdensome investment such that we don't have to wait until our sources of income is stable before we can start buying Bitcoin and there is saying that a low coiner is better than a no coiner