The manual suggests 1st oil change at 6000 miles(9600km) or 6 months...whichever comes first. I’m more conservative during the first change and would probably take it in at the 3000-3500 mark.
I wonder if you have the Jeep wave program out there. We are automatically enrolled into that program and you get 2 free oil changes per year for 2 years. Worth finding out I would reckon.