Fitbit "resting" calories burned way too high

I'm a Fitbit user who is on iOS. I'm having an issue where in my Fitbit app, it thinks I'm burning hundreds of calories even first thing in the morning. For instance, it is 9am where I am now and it thinks I've burned 750 calories. The only physical activity I've done is gotten my kids ready for school and walked half a mile for school dropoff.

When I look at Apple Health, my calories are also high so I was assuming that Apple and Fitbit were transferring data and maybe Apple Health is the issue (I have no Apple Watch, so it must be pulling the data just from my iPhone?). I've gone through and deleted calorie data on both the Fitbit app and the Health app. I've also removed any connections between Fitbit and my phone. I've also deleted all the data in my Fitbit.

But it's still reading that I've burned 750 calories. I'm hoping once the Fitbit resets tomorrow the calories will be more accurate.

Has anyone else dealt with unreasonably high calorie calculations (when not exercising) and found a solution?