Will placing an ear plug in my belly button help it open up more or should I consider a revision? (photos)

I had a tummy tuck two years ago. I recently went back for a couple issues with my belly button and I was told that using an ear plug could open this up a bit more in about 3-4 months. I was wondering if doing that would really work or should I go see another surgeon about a revision? I would like the "tunnel" part to be a bit more open. The inside does move easily, but it just fills back in when I remove my finger. Thanks!