So I don't think it's time to buy more BTC currently.
Firstly, there is no invitation to buy here. If you have Bitcoin hold it. If you want to increase the load, just buy it, it's up to each person's choice.
DCA is still good just for an assurance to accumulate more right before bitcoin reach above 40K level. You’re right that this current bullish trend might collapse anytime but I believe the price will still recover at some point since there’s halving next year which is one of bearer of positivity in Bitcoin.
Yes, even though there is a decline in Bitcoin prices, the 4-year price movement circle after the halving will bring Bitcoin prices up again. Actually there is no harm in buying Bitcoin at a price below the previous level.
But again, it all depends on our own choices. Whether you want to buy it or not.