As a young investor you don't need a million dollar to investing in Bitcoin you can invest $200, $300,$500, everyday for 2 or 3 years you will be a millionaire, I know that is how must people start up there Bitcoin investment journey and today they are millionaires, so this is also a way for the young investors to start, thank you.
$200 every day if calculated for 2 years (with a count of 1 year 365 days) means $200x730 days = $146000 wow how big is that 
But mate finding $200 a day is not easy and not everyone can do that so when you really want the DCA system it would be better if you look at the economic conditions of the income you have cut the expenses we will do for needs and others (including unexpected funds and maybe savings) then then you can conclude how much we will budget in investment because $200 every day is clearly too big for ordinary people unless you are born from a golden spoon.
In addition, if you really want to do the DCA scheme then I think you also don't need to be in bitcoin every day to minimise transaction costs so it can be done once a week. Once every 2 weeks or even once a month because in the end things like this also matter. The most important thing is consistency because when you try to be aggressive by doing $200 a day when we only last a few days because the nominal is too heavy to invest then your DCA will be affected so it is better for you to use money that you really want to keep for a long time rather than forcing aggressiveness for just a few days when you want to do a DCA plan.