The truth is that you can't just keep accumulating , you will definitely have a goal something like an accumulation goal. And is still possible to buy once in a while after reaching that goal it all boils down to you and what is best for you at that time . Imo having a particular timeline as your target is some how , is best you have a fixed amount of bitcoin as your target because you might give yourself 5 years and still haven't gotten far with your accumulation. So for instance your goal is 2 BTC , so your target will be that two if you don't later have a change of plan, so having that goal will definitely help you being more serious and more aggressive with your investment when accumulating.
The real goal for real bitcoin investors is to invest bitcoin aggressively and no need to slack. Bitcoin investment is continuous because their is nothing retirement for investment so far as we have inflation and we also make use of Fiat in earning and for peuchasing. Meeting up the target and taking a break or going slow with bitcoin investment it means you are comfortable with inflation and the Fiat which is known for depreciating in value. We dont get tired in investing , target and goal is to accumulate good amount of bitcoin.