When an investor resort to only holding possibly because you've reached your accumulation target or thereabout, without exhausting your holding period, I don't think it's quite advisable to stop accumulating. Continuous buying revitalizes the energy to only add to your portfolio and reduces the possibility of entertaining the thought of selling your Bitcoin.
Furthermore over accumulation is a good thing and ensure you have a larger portfolio than you planned out initially. Surely, if you're still able, you can reset your accumulation target and get back into your accumulation phase to get a relatively higher stash of Bitcoin. It's noteworthy that the bigger your portfolio, the more profits you tend to enjoy on the long run.
Why have accumulation target when you can continue to stash your bag more,
A target is an achievement benchmark you set for yourself to keep yourself motivated and your focus intact and it helps you discipline yourself never to give up until you have gotten to such level. Likewise, accumulation target is the quantity of Bitcoin you've set out to acquire at the beginning of your accumulation journey and it's important you set it, so that whenever you feel discouraged or lazy, that target servers as a reminder of the quantity of Bitcoin you've set out to accumulate and it motivated you to continue in your persistent and consistent buys.
Having an accumulation target doesn't mean you should stop buying as soon as you reach your mark, investors can always reset their accumulation targets to a higher one and get back into their accumulation phase or rather continue buying and get into the over accumulation stage of their investment journey. The goal is to have more quantity of Bitcoin in your portfolio.