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 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.