Sheesh...It's called a sense of humor. Get one.
You have a very strange situation and we are trying to give you suggestions. I agree with akirby; to have all four tires with a small leak in each one of them is very unlikely.
If you don't like what any of us have to say, then figure something else out. After all, you are the one who doesn't think he should check his tire pressure because he has the TPMS. "What good would checking them myself do if I don't have nitrogen to fill them back up(?) I'd still have to go to the tire shop." Using that same logic, why check the oil or radiator level; you just have to get them filled up too.
You could always develop an Excel spreadsheet. Test each tire three times every three hours. Make a column showing each tire, the tire pressure and the time you checked it.