It takes a few thousand miles to get good mileage, new tires even LRR are sticky.
Check your a/c use, it is better to start out with it at 80 and I have all 4 windowd cracked, then start lowering the temp as the car cools off.
In that hot climate, look into window tint (the maximum allowed by state law) ask for the 3-m kind that has ceramic microbeads in it, it reflects a lot of heat rather than asorb it into the car, look for parking in the shade.
When you accerlate, keep the rpm between 1,500 & 2,000 rpm (unless there is an emergency) NEVER let the cvt/engine race when you take off.
Coast more, coast up to a stop sign/light...be patient, in break-in and in driving....remember, you may take a couple extra minutes to arive but you will arive with greater gas savings....
As I told one friend who hasseled me for ariving at a mutual destination a couple minutes after him, these days, it is far more important to see 75 MPG than to go 75
MPH.