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.
Depends on our target or goals. If we are the type that wants a massive profit and wants to HODL for a long time, then definitely buying every day is a must. It does not matter if the season is bull or not because that is what the DCA method have taught to us. BTC is a safe coin but you know what is the real risky here? They are the shit coins or the meme coins. It does not matter if we HODL them for the short or long-term, however the risk for the long-term at them is even more. Easy to say that the best buying opportunity is at the dip but you know how hard it is for the BTC to dip? Maybe yes, if we are talking about any other coins but we are talking about BTC here mate.