If you want to keep his minutes in an area of around 75 minutes max., which absolutely makes sense, you should only set "strictly follow depth chart", and additionally let him start only once a week while putting him as a sub in the second game, leaving him out completely in the third one.
That way he won't play too many minutes. Additionally, a better sub lowers his minutes played per game as a starter.
I would recommend hiring a trainer with speciality "fitness" to keep his game shape a little better while playing around 75 minutes a week.