Whats my peach tree doing?
The growth you are seeing are suckers from your root stock. You can try getting another scion and using the same root stock to do a new graft next spring. If you want to try this, choose the straightest, healthiest stem of the root stock, and get rid of all the other growth. Here is a link on how to graft fruit trees from Minnesota: https://www.extension.umn.edu/garden/yard-garden/fruit/grafting-and-budding-fruit-trees/#glossary