That's not really DCA, at least how I understand it. DCA is something like "I have $520,000 in cash right now today sitting in checking, I'm going to buy $10,000 a week of VTSAX for the next 52 weeks" which on average is a bad strategy.

What you're describing is better analyzed as a continuing series of lump sum investments. You're investing as soon as you have cash available, not unnecessarily holding onto cash.

This is the original definition of DCA, but by this point most people view DCA as what everyone else in the thread is talking about.

Not a hill worth dying on.