Of course, we invest in the amount of money that we can afford to lose. The number of money depends on each person, it may be not the same between one person and another person. Each person has a different level of economic, it is depending on the profession or the income to get monthly.
It is necessary to manage finances well so that you can allocate appropriately for bitcoin, otherwise this will be a bit of an obstacle because you never take into account other needs, or you can prioritize other needs when there is still money left over that can be invested in bitcoin by means of the DCA method.
Of course each of us is different in terms of the finances we get, but if you are able to do wisely everything will run smoothly even though there are always a few obstacles but that's not a big problem, the most important thing is that DCA continues every week or month.
Sure, DCA is an effective strategy to do, it helps us to multiply the number of our assets. If we can add $30-$50 in every decline, it will make bigger potential profits in the future.
If you buy bitcoin by decreasing it is not DCA, because DCA at any price when the money is ready, you have to buy it up or down because it is based on the average price.