DCA approach can only be applied to bitcoin, this is because bitcoin has great potential and is likely to be more valuable with the timeline as long as you are in a long term investment. Another thing you should know is that DCA approach can be done by both the pleb and the rich which any amount even as low as $10. It depends on how much your income is and how you feel is best for you to start investing with.
So crazy how I see most people on the urge to DCA in shitcoins. I'm not impressed when I see such person as I feel they never bring out their time to learn more. Dcaing in shitcoins can be the worst investment strategy, questions needs to be asked if those shitcoins has a long continuity span in the market? If the project should Dip like that of Bitcoin is it possible to return back profits reaching a new All Time High?
And we should also ask ourselves if truly shitcoins is a long or short term investment, whereas I know shitcoins are for short term and DCAing is absolutely the ideal strategy for long term investment.
Shitcoins are useless and don't even deserve investing in because they are more like gamble and beginners don't need to distract themselves, talk more of DCAing on shitcoins. You don't need to look for any coin with big market capital, just invest in only bitcoin and DCA regularly with the amount that would be at ease with you after you have taken care of your monthly expenses and have made available your emergency funds.
Most people will find it much better to gamble with their portfolio as they feel they get better return than just doing the usual Buy and Hold or DCAing in Bitcoin. Not that they are afraid Bitcoin will crash someday but they lack patience and always look for quick profit. It is advisable to know which fits you before deciding to invest as more risked are involved with investing in shitcoins.