I think it is not necessary to buy bitcoin everyday specially in times of bull season, because it is so risky to buy btc during bull season, the best time to buy bitcoin is during the dip but not everyday we need to make a proper timing to buy because it involves capital so we need to be careful to avoid loss.
The dip is the time when we don't know that it's the actual dip. And that's why if someone is good at spotting the dip, the hints are out there. Whenever the institutions are buying, we can rely on that and use it as a basis if the dip has finally come. But then, one thing with them is they're DCAing at any price of Bitcoin and even in the bull run, they don't mind it. I think they're on a rush for accumulating and base it on the amount of BTC's that they have and not in the valuation that it has got in dollars. But I agree to you that it's not a good time to buy during the bull run but if you can afford to do so, I'll take that as well.