You are selling your bitcoin for altcoins during bull run, so if you have sold your bitcoin for altcoins and bitcoin start to fall, you know that altcoins will fall more than bitcoin? Yes, altcoins are going to fall more than bitcoin.

I will advice you that if you have made good research about gold altcoins to buy, you can let more of your asset to be in bitcoin while the remain in altcoins, that is a better strategy.

At this time, I can still advice you to continue to DCA.