Do GMAT questions if I am studying for GRE?

In the quant practice videos for the two month plan, sometimes GMAT-specific problems come up. If I am studying for the GRE (not GMAT), should I be doing them? Or can I move on?

have you watched the quant progression video? If not, that’s a first step.

If you have, at what stage of prep are GMAT questions potentially appropriate?