[The income should be more than the demand, and if the income is not high, how can you think about DCA?
If the income is not more than the demand, how will you meet the basic of the family... First of all you have to keep our family well and then something else.
At the end of the month you can invest your extra money invest in DCA you want but you have to keep the needs of the family in mind first, in this case you can reduce some extra expenses. you have to stick to a atlest DCA target amount that is 10% or more, it's depend on your income.
Yeah! It's true that your income must overflow your your expenses and budgets.
If this is not achieved then some measures could be taken like
Reduce your outflowsAvoiding spending extravagantlySetting up scale of preference as some can be forgone(or brought down to a new budget list )to come up with a DCA target Avoiding deficit bugetWith these, there should be something for ones DCA