6 month old as a ring bearer? 💍

My wedding is next month and our son will be 6 months, almost 7. I really want him to be involved in the wedding(ring bearer?) but don’t know how to do it. I was thinking of having my mom (his grandma) hold him and the rings while walking down the isle. I’ve seen babies be pulled in a wagon but he won’t be old enough for that and I don’t think that would look good in the church. And yes, I know babies can be very unpredictable. BUT, I know my son and if I didn’t think he was able to keep it together in the time it takes to walk the isle, I wouldn’t have even thought about it. I appreciate your ideas/thoughts.