Very simply, I would go to a 6 DAY rotation not a 6 MAN rotation. I think it’s foolish to have your best starters, whoever they happen to be at any given time, go a full week in between starts even if they might be capable of pitching effectively every fifth day without being overused.
There are a few places in the schedule coming up in which there are two off days within 3 or 4 days of each other (see August 10-24 when there are 4 off days and 11 games in 15 days). Using a strict 6 man rotation through that period would mean some pitches having 2 starts 8 days apart. I’d prefer using that period to try to win some games with less stress on the back end of the bullpen, either by “piggy backing” starts or using one or two of the starters. In the bullpen.
If I were managing I would be setting the rotation to maximize reasonable use of my best starters and using the pitchers in the lower parts of the rotation to fortify the bullpen in between starts.