Starting Bitcoin investment with little capital will be very challenging mostly if that happens to be the major survival option of the investor. And in cases where the investor plans on using the proceed to solve their needs they might end up selling when the price have dropped just to settle the pressing need of that time.
As experienced investors are there measures that can be imbibed by new investors with little capital to help boast their capital. Some will want to mention patience which I will agree to but in situations where the money is needed to meet an emergency need how to you tackle such situations. Your formula might be a saving approach.
You need to earn a regular income. If you can earn a regular income, you can invest in bitcoin with the amount you increase from your money. In general, DCA is a good method for those in this situation.
Your investments can be used in emergencies, but it may be a wrong decision to see this as the first option or to consider selling your investments at the first opportunity if you cannot earn enough income. So it is best to create a good investment strategy and move on.