Turn off the automatic cleaning in the menu. The power clean does use a lot of ink. When needed just run through the nozzle check and only clean when necessary using the "Head Cleaning" as this use very little ink.
You only need to use the printer once a week to keep the nozzles clear. I have four Epsons (4000,4800,4880 and a 9890) and rarely have clogging of the heads even though it can be a week or two between uses of a particular machine.