That's a good tip though everyone has a point and a reason why we're DCAing. And one way to monitor or at least get more encouragement is through checking the price regularly. When it is not advisable to check the prices regularly is if we are at the bear market when you're just mostly on hold position and don't accumulate, so it pretty much don't have difference at all.
Monitoring and cheeking the price of Bitcoin regularly is a traders mindset since if you are investing for a long time purpose three is no need trying to cheek the price of Bitcoin regularly before accumulating Bitcoin and also for investors using the DCA strategy you won't have much need cheeking price of Bitcoin when you can accumulate Bitcoin either weekly or monthly regardless of it's price and continue hodling for long when the price is also at dip it will give you the opportunity to accumulate more Bitcoin.
There's nothing wrong, for being proactive and frequently checking the price of bitcoin. If an individual choose to do so and go through the stress then it's okay, especially if they are doing so, to seizing opportunities to accumulate more Bitcoin during price dips. But checking the price of bitcoin frequently out of Emotions is not good it can lead to FOMO, Which is not solid move for an investor with a long-term mindset. Whatever an investor does in regards to their long-term investment, it should be done with a clear head on how to boost his investments over time.
Different strategies work for different people, some use DCA, and there are those who buy during DIPs. Those who buy during dips are likely to be check the price of bitcoin frequently, looking for those moments when the price drops to make their purchases.