Question about investing and doing the things you’re not supposed to do

I pretty much do things by the book. I wanted to ask a question here that keeps pestering me. So obviously trying to time the market is a terrible idea and you’ll lose doing it. I’ve always just DCAd and not paid attention to anything else.

I’ve made almost 30% this year in my Roth. 10% in the last month. This obviously won’t continue at the same rate. Would it be a terrible idea to pause the DCA and instead DCA into short term treasury bonds and wait for a downturn of say 5% from where we’re at and then start DCAing back into the market again? Explain why this is a good or bad idea please.