Running out of infusion sites because of scars -- help

After about a year of pump use soft areas of my body are almost completely covered with scars and I'm not sure what to do in a few months becuase those areas surely won't heal in time. I'm wondering if anyone here have this problem and if so how do you handle this. Do you simply reuse pump sites without waiting them to completely heal? Or do your infusion sites completely heal in a few days?

Thanks.

PS. I'm using medtronic minimed, with silhouette infusite set and changing my sites in every 3 days.