So tesla is telling you 6,968 kWh a year.
In relation to "are they holding back power" the answer to that would be if you see the system cutting off during the day because you are not able to export (no PTO) then you might realize more production after that point (but production will also decrease since we are past the solstice).
You would see that on your daily production as the pv production either slowing down (curtailment) or stopping, if your home loads are less than your production.
Whether you will see more or not depends on whether your home loads consume all your PV production or not. We have no way of knowing that.