Every beginner should focus on the ongoing buying of bitcoin instead of engaging yourself into monitoring the market because majority of the beginners that was going with this practice end up selling thier holdings in the middle of thier accumulating journey due to panick, As they can't withstand the pressure so to avoid putting yourself in this kind of pressure I would advise you just Stick to your weekly/ monthly buying of bitcoin and pay less attention to the market condition until you reach your investment goal that's if you don't want to be trapped in the middle of your accumulating journey just like other guys.
But you have to be calculative when buying like, when the price of bitcoin is $122,000, definitely it would come down to $119,000 or $118,000 which is the the current stable price of bitcoin so once it hit that lower amount you can buy it and you keep it for long term investment plan.
Are you trying to say that a low coiner shouldn't buy bitcoin because the price was at $122k and he should wait till the price dips to $118k. That's a wrong advice and a contradiction to DCA method like you proclaim. What if you wait and the price of bitcoin didn't dip to $118k, so you wouldn't buy at that moment when you have your discretionary income available? It means that you will end up having little bitcoin in future because you were waiting instead, of continuous buying with DCA to keep your bitcoin investment ongoing 4-10 years and above.
DCA method doesn't care about the price of bitcoin at that moment whether it is high or low, you are to buy at any price interval for the future because bitcoin price will definitely move higher than whatever amount that you bought now. Waiting for price dip has lead a lot of people to missed opportunities and regrets.