Why think about investing if the finance is still unstable this will be a problem in the middle of the road and until whenever your investment will not run smoothly, but it is true that when they have earned additional income or a sufficient monthly salary then they can set aside to invest in bitcoin.
Actually one thing you should know about Bitcoin investment is that if you should wait till you get the amount of money you want in your bank account before investing you could end up not investing at all because the more you are waiting to get rich first that's actually the more expenses are compounding, although I no that you have your own decision to make but waiting to be completely financially stable could possibly take you a very long time before you can start accumulating Bitcoin.
You don't have to get huge amount of money before you can start investing on Bitcoin, however is not like everyone who are into Bitcoin now have a bank stored with huge amount of money but instead they started from somewhere and before they realize they had already gotten a good amount of Bitcoin on their portfolio, so I would advised you start from little through the use of DCA strategy and with time and consistency you could be surprised with how far you will go on your investment.
It is natural for some people whose finances are not stable or it can be said that they have minimal capital to accumulate money first, indeed for these people it is not easy, but if you have the desire and motivation you have, and work hard to invest in BTC one day you will succeed, there are many examples of people who are rich starting from small things, as long as we are consistent, let time tell how strong these people are and reap the results in the future, don't be too hasty because investing is risky.
Start collecting money if you think the capital target has been met, then invest using the DCA method, because it is easy to understand.
You are correct! Many new investors may not have enough money in the initial stage. In that case can start small even if it is $5 per week. If he continues this regularly for a long period of time, he will develop a habit of accumulating BTC along with future capital growth. When he starts depositing BTC regularly through DCA method his income can increase as well as investment amount. And if he does his research on the past price of Bitcoin for inspiration, he can get a clear idea. I think one should be more focused on holding BTC without expecting extra profit in the initial stage. So get used to holding BTC to increase the amount of profit in future.