Some people need to balance growth with safety..... Taking a bit of profit during key moments is not necessarily weakness, it is strategy. What matters most is staying in the game and not getting shaken out entirely. For some, small profit taking is what keeps them sane and committed for the long haul......
Since everyone doesn't have the same financial flexibility is the main reason why you should figure out how much from your discretionary income that you will use to DCA weekly/monthly that you can afford to lose. So that, you don't give a fuck about touching your bitcoin or think of selling part of it when you have reach your bitcoin target.
If you are plan to buy and hodli for long term and you take little profits gradually when you're still in your accumulation phase, you are acting like a trader and that will make you lose focus on only accumulating without selling. This will slow down your bitcoin journey and you might only be able to accumulate little bitcoin in the long run, because you are selling. You finally turn into a trader. Don't invest more than your financial capacity from your discretionary income to.