After living with two cars with GM’s oil life computer, I estimate that your car will be fine but GM says to change the synthetic oil once per year regardless of what the remaining oil life readout may be. If your remaining oil life went down 1% every 5 cold starts and you drove 5 miles per trip, the readout would go down only 20%. It’s possible that some of your starts are warm starts and some trips might be longer than 5 miles which would extend your oil life.