A lot of people were saying the same thing when the price was in the $10-20k range, and look where the price is now. There's no telling how long this bear market (we're still in one) is going to last; just as a reminder, the previous one lasted for two and a half years.
That is true. Since I plan to hold Bitcoin for five to ten years,
it is better to buy Bitcoin continuously every week or month, no matter what the market is like. If the market goes down more, I will buy more. And when it was ten to twenty thousand, I regret it when I remember that, I did not buy it even if I had the ability, in fact, I did not understand the importance of Bitcoin properly then. But now I will not miss the opportunity. No matter what the price is, I will continue to buy. Because Bitcoin has huge potential.
You still need to come to a conclusion on the definition of your periods of consistency in buying accumulating bitcoin, if you want to do it weekly, then you can go ahead and if it is monthly, you can define the amounts properly in relation to your available discretionary income for the whole month. Why I see this statement I made bold faulty is that you might end up deceiving yourself and being whimpy where you should show more dedication by being aggressive.
For example, at the end of the month, you've a total discretionary income of $1000 and you intend investing 50% of it into bitcoin which is $500, now you may want to go weekly at some point and split the $500 into weeks which may be around $125 weekly and having registered in your mind that you buy $125 worth of bitcoin at every purchase and without proper discipline to maintain it weekly, you might intentionally or unintentionally skip some weeks and buy that same worth of bitcoin at the end of the month and not accounting for the weeks you missed nor would you make up for them. It is important you are explicit in your periodic purchases and try to remain consistent in your own defined period and amounts you put into accumulation of bitcoin.