As a part-time Uber driver, I bought my car in May 2016 with 20K miles on it. As of yesterday, I had 95K miles on it. I did take a four-day trip where I drove 1100 miles each way but no driving during the time I was at my destination. My personal miles are less than 5% of the overall miles.
As a part-time Uber driver, I take days, weeks and months off at a time. The longest time I took off was 8 months. Came back no problem. I kept my docs updated.
An insurance company will not ask you miles driven for commuting to work with business insurance. This is because your home is usually your starting place. You don’t drive home if you already live in your home. If you drive to an office building then get into your car, that is considered commuting. I can not tell you how many times I have been pinged pulling out of my garage (connected to my house) and going straight to a pickup. It does help I live near a concert venue with hotels nearby. However, most of the time it is when I am doing airport trips at 4AM.
Sounds good, and seems to work for you; good luck!