You can still be making your purchases and still be planning how you can increase your income flow it's not compulsory to get multiple sources of income before getting started in your bitcoin investment as you can get started as you figured out your discretionary income for it will be to be a low coiner than been a no coiner as bitcoin investment doesn't require been so rich before one can start accumulating Bitcoin, with the DCA strategy a new investor can start accumulating Bitcoin gradually provided he has a discretionary income either weekly or monthly and hodl and be planning to how to increase your financial strength.
Yes, using free time to earn additional income is a good step to be able to move aggressively in buying Bitcoin. To be more active in accumulating Bitcoin, such as in one week you can make two purchases, of course by increasing our cash flow or in other words we get income other than our basic salary.
Finding a side job or in your spare time is not that difficult and of course if we want we can do it. For long-term investment we have to think carefully, even if there are other assets that are very slow in the increase process or the profits are smaller in the previous 5 years, of course those assets can be transferred to Bitcoin. But it must be thought through carefully because every investment has a risk so you have to be prepared for all the risks.
If you look at big investors, of course many of them act aggressively, some even sell land, houses in order to be able to buy more bitcoins. They are ready for all the risks, so the decision is all in your hands. However, if you are not able to do that, then discretionary income can be relied on to run DCA for long-term Bitcoin accumulation