When I first bought my car it was using about that much oil every 1000 - 1500 mi. So a friend of mine pulled the PCV valve, found it to be not functioning correctly, and it was replaced for approx. $4.00
If you pull it with it still attached to the hose you should be able to shake it and hear the little check valve ball rattling around.
It was about as easy as replacing a light bulb and I have had no oil consumption issues with the car ever since.
You may give it a try, worst case scenario you’re out $4 but it will still be one less thing to worry about in the future.
What do you have to lose ?