I agree with your observation about the market. There can be a small correction before the halving which can take us to the 25k level again. This correction won't be significant so selling at this level and buying back when there is a dip won't make much difference. However there isn't any guarantee that there will be a dip before halving. If our prediction proves invalid we will miss the chance to buy at this level either.
I would rather not sell at this level than later not have the opportunity to buy back at the declining level you are referring to. So I would prefer to continue holding rather than selling now and will also try to buy when there is a price drop as you say, although not with much force. But buying when the price decline has occurred is still a pretty good option for everyone so there's no harm in taking advantage of it, just because the guarantee of a decline is still uncertain. I will continue to keep the Bitcoin that I bought previously.