DCA investing despite not gains being made?

For the past year, I have been investing in VTI. However, due the current market, the price has not been moving up.

Let's say at the start of the year I had $50K in VTI. Each month I have added $1K (so $12K total), but the total value has remained at $50K even though I obviously own more shares.

It's obviously disappointing, but is this the recommended course of action? Just keep throwing in the same amount every week even if I'm not seeing any gains?

Thanks!